Windows 11 KB5077181: How to Fix Boot Loops and Wi-Fi Issues

The February 2026 update is causing critical system failures. Learn how to diagnose and resolve connectivity and startup errors on your PC.

---

Hook and Who This Is For

You just installed the latest Windows 11 update, but instead of performance improvements, your Wi-Fi has stopped working and your PC is stuck in a persistent boot loop ^[1][9][15]. This frustrating experience is becoming increasingly common following the release of the February 2026 cumulative update, KB5077181 ^[7][15]. You are not alone in facing these disruptions, as a growing number of reports highlight significant system instabilities across various hardware configurations ^[2][7][16].

This article is specifically for Windows 11 users who are experiencing the following issues after the February 2026 Patch Tuesday rollout:

• Network connectivity failures, including "connected but no internet" status and DHCP errors ^[4][8][11].
• Peripheral issues involving Bluetooth disconnects or non-functional devices ^[11][12][16].
• System stability problems such as infinite restart cycles, sign-in failures, or 0x800F0983 installation errors ^[1][7][15].

This guide covers the known symptoms, affected hardware like the Alienware Area-51m R2 and Lenovo LOQ, and verified troubleshooting steps to restore system functionality ^[1][11][12]. It does not cover general hardware malfunctions unrelated to the KB5077181 software patch.

TLDR What This Means for You

The Windows 11 KB5077181 update, released in February 2026, is currently causing significant stability and connectivity issues for a segment of users ^[7][12][13]. While intended to patch security vulnerabilities, reports indicate the update may lead to persistent system failures and hardware regressions ^[15][16].

• Widespread Connectivity Failures: Users are reporting that Wi-Fi and Bluetooth stop functioning correctly ^[10][14][16]. A common symptom is a DHCP error where the device shows as "Connected, no internet" ^[4][6][8].
• Critical Boot Loops: Some systems fall into "endless" restart cycles during or after installation ^[4][15]. In some cases, devices may restart more than 15 times before reaching a login screen ^[1][4][12].
• Installation Errors: The update often fails to install entirely, triggering error codes such as 0x800f0983, 0x800f0991, and 0x80073712 ^[6][10][16].
• Primary Recommendation: If you are experiencing these issues, the most effective solution is to uninstall KB5077181 via the Windows Recovery Environment (WinRE) or Command Prompt and then pause updates for at least seven days ^[1][12][13].
• Risk of Instability: Frequent boot loops and forced hard shutdowns can potentially lead to system file corruption or data instability ^[13][16].

Warning: Attempting to force the update to install after repeated failures may result in a non-bootable system state. It is generally advised to wait for a verified fix from Microsoft if your machine is currently unstable ^[13][15].

Background and Basics

The Windows 11 KB5077181 update was released on February 10, 2026, as a mandatory cumulative update for users on versions 24H2 (Build 26100.7840) and 25H2 (Build 26200.7840) ^[4][9][13]. This patch was primarily intended as a routine security update to address vulnerabilities within the Windows Kernel and Win32k subsystems ^[5][14]. Additionally, it aimed to resolve persistent issues from previous months, such as the UNMOUNTABLE_BOOT_VOLUME bug that had affected users since late 2025 ^[9][15].

Microsoft designed this update to include several critical quality improvements and non-security fixes ^[5]. According to official documentation, it was expected to resolve Blue Screen of Death (BSOD) errors like KERNEL_SECURITY_CHECK_FAILURE linked to specific graphics card configurations and the dxgmms2.sys file ^[15]. It also included a fix for a known bug in the January 2026 optional update that prevented some systems from connecting to Wi-Fi networks using the WPA3-Personal security protocol ^[4][15].

Despite these intended stability improvements, many users report that KB5077181 has introduced significant regressions ^[1][11]. While the update was meant to fix networking protocols, it appears to have caused new DHCP errors and Bluetooth instability on specific hardware configurations, such as those found in certain Alienware and Lenovo laptops ^[1][4][8]. This has created a scenario where the update potentially trades one set of system stability problems for another ^[9][13].

---

Update Objectives vs. Reported Outcomes

The following table compares the intended fixes of KB5077181 against the actual issues reported by the user community and technical analysts:

Intended Fix/Feature	Target	Reported Outcome (Regressions)
WPA3-Personal Fix	Restore Wi-Fi connectivity [4][15]	New DHCP errors; "Connected, no internet" [1][11]
Graphics Stability	Fix dxgmms2.sys BSODs [15]	Stuttering in DirectX 12 titles; gaming crashes [5][8]
Boot Reliability	Fix UNMOUNTABLE_BOOT_VOLUME [9]	Infinite boot loops; INACCESSIBLE_BOOT_DEVICE [5][15]
Security Rollout	Update Secure Boot certificates [4][11]	Installation failures with code 0x800f0983 [1][16]

---

These issues are generally observed to affect only a subset of hardware configurations, though the range of reported error codes—including 0x800F0991, 0x800F0983, and 0x800F0922—suggests a broad conflict with existing system files or third-party drivers ^[1][10][16]. Experts suggest these failures may be linked to corruption in the servicing stack or conflicts with previously applied patches ^[3][6].

Problem Explanation

The release of the Windows 11 KB5077181 update has led to a surge in reports regarding critical system instability ^[15]. While cumulative updates are intended to provide security patches and performance improvements, many users are finding that this specific patch disrupts core hardware functionality and prevents normal system operation ^[12][16].

The Infinite Boot Loop

The most disruptive symptom reported is an "endless" restart cycle that occurs during the late stages of installation or at the sign-in screen ^[7]. On certain high-end hardware like the Alienware Area-51m R2, this loop manifests as a keyboard "rainbow wave" scan followed by a system reset ^[1]. Some systems reportedly restart more than 15 times before allowing the user to attempt a login ^[1][7]. In some instances, this behavior appears tied to "cold starts," where the machine fails to boot properly when powered on after being off for an extended period ^[1].

Connectivity and Peripheral Failure

Users who manage to bypass the boot loop often encounter a total loss of internet or peripheral connectivity ^[15][16]. This typically involves:

• Wi-Fi and DHCP Errors: The system may show a "Connected but no internet" status ^[7][10][14]. This is often caused by DHCP errors that prevent the computer from obtaining a valid IP address ^[15][16].
• Bluetooth Instability: Reports indicate that Bluetooth toggles may disappear or devices such as headsets and controllers may disconnect intermittently ^[10][16].
• Hardware Disruption: Additional glitches include audio stutters, system freezes, and the failure of external monitors via HDMI ^[8][9].

---

Installation and System Errors

For many, the problems begin before the update is even fully applied. The installation process frequently fails, accompanied by various technical error codes ^[12][14].

Error Code	Reported Symptom
0x800F0991 / 0x800F0983	General installation failure or interruption [12][14]
0x800F0922	Installation rollback; potentially related to Hyper-V or Secure Boot [14][16]
0x80073712	Missing or damaged update files [12][14]
SENS Error	"The System Event Notification Service failed the sign-in" [7]

---

Impact on Laptop Stability

Specific laptop models, such as the Lenovo LOQ series, have shown unique symptoms following the update ^[10]. Users have observed unusually long shutdown times, sometimes taking up to five minutes to power down ^[10]. There are also unverified reports of systems failing to fully power off, leading to the chassis remaining warm while stored in bags, which suggests the update may interfere with standard power management states ^[10].

While Microsoft has not officially confirmed a widespread root cause for all these behaviors, the overlap in reports from different hardware manufacturers suggests a significant conflict between the update and existing driver or firmware configurations ^[7][11][15].

Root Causes and Analysis

The complications surrounding Windows 11 KB5077181 appear to stem from a combination of networking regressions, driver conflicts, and underlying system file corruption. While Microsoft initially intended this update to resolve previous boot issues, reports indicate it has introduced new instabilities across various hardware configurations ^[8][12][16].

Experts have identified several core reasons for these failures, ranging from service-level errors to hardware-specific incompatibilities.

Networking and DHCP Regressions

A primary cause of connectivity loss is a DHCP (Dynamic Host Configuration Protocol) regression within the update ^[8][15][23]. This error prevents the operating system from correctly assigning or receiving an IP address from the router. Consequently, users see a "Connected but no internet" status for Wi-Fi and Ethernet connections ^[2][13][16].

Graphics Driver and System File Incompatibility

The update has been linked to critical system failures, including the "Black Screen of Death" (BSOD) with the error code KERNEL_SECURITY_CHECK_FAILURE ^[4][10]. These crashes are often tied to specific graphics card configurations and issues with the system file dxgmms2.sys, which manages DirectX memory ^[4][10][11]. Analysts suggest that the Area-51m R2 and similar high-end laptops are particularly sensitive to these GPU driver interactions during the update process ^[1][2].

Servicing Stack and Component Store Corruption

Many installation failures, identified by error codes such as 0x800F0991, 0x800F0983, and 0x800F0922, point to issues within the Windows Servicing Stack ^[2][15][16]. These codes typically indicate that the update files are missing, corrupted, or blocked by existing system inconsistencies ^[2][14][15]. In some cases, the update fails because it cannot properly replace files that were damaged during previous update cycles ^[1][6].

---

Confirmed vs. Speculative Causes

While some triggers have been officially documented or widely observed, others remain under investigation by the technical community.

Cause Type	Identified Trigger	Impact
Confirmed	DHCP service failure [8][23]	Wi-Fi/Bluetooth connectivity loss
Confirmed	dxgmms2.sys memory bug [4][10]	System crashes and BSODs
Confirmed	Component store corruption [2][16]	Installation errors (0x800F0983)
Speculative	BitLocker/TPM interference [1]	Extended boot loops and startup hangs
Speculative	Failed Dec. 2025 servicing chain [15][23]	Persistent UNMOUNTABLE_BOOT_VOLUME errors

System Event Notification Service (SENS) Failure

For devices that successfully boot but fail at the login screen, the cause is often a SENS error ^[15][23]. The specific error message "The specified procedure could not be found" suggests a DLL mismatch where the update failed to correctly register a required service component ^[15][23]. This prevents the user profile from loading, even if the hardware itself is functioning ^[8][9].

Hardware Security and Firmware Interaction

Evidence from technical forums suggests that outdated BIOS firmware or active BitLocker encryption may exacerbate boot loop issues ^[1][2]. On certain high-performance laptops, the update process may trigger a security flag in the TPM (Trusted Platform Module), causing the machine to restart repeatedly as it fails to verify the boot environment ^[1][5][15]. Industry reports indicate that some devices may restart more than 15 times before a successful boot occurs ^[8][15][23].

Evidence and Reality Check

The issues surrounding the Windows 11 February update, KB5077181, are well-documented across multiple tech publications and community platforms. While Microsoft released this patch specifically to address critical system failures, user reports indicate that the deployment has introduced a secondary wave of technical complications ^[4][8]. Reports from community forums, including Reddit and official Microsoft Q&A boards, suggest that the update’s reliability is currently under scrutiny ^[8][10].

Media outlets and technical analysts have identified a clear discrepancy between the intended fixes and the actual user experience ^[4][15]. Although the update successfully resolved specific Black Screen of Death (BSOD) errors for some, a significant number of users encountered new hurdles during or after the installation process ^[7][11]. The following table compares the official objectives of the update against the problems reported by the technical community.

Feature / Area	Intended Fix (Per Microsoft)	Reported Reality (Per Users/Analysts)
System Stability	Fixes KERNEL_SECURITY_CHECK_FAILURE and dxgmms2.sys crashes [4][5].	New reports of system freezes and audio stuttering [15].
Wi-Fi Connectivity	Resolves WPA3-Personal protocol connection failures [4][6].	New DHCP errors; Wi-Fi shows as "connected" but has no internet access [7][8].
GPU Performance	Patches Nvidia configuration bugs causing black screens [4][11].	Persistent graphical glitches on Nvidia GPUs and HDMI output failures [15].
Bluetooth	General performance improvements.	Unverified reports of devices failing to be recognized entirely [15].

---

Technical analysis from sources such as PCWorld and Windows Central confirms that the update process itself is a primary point of failure for many ^[4][10]. Multiple error codes have been verified as appearing during the installation phase, preventing the patch from applying correctly ^[7][8].

"The only reliable solution for installation errors has been to perform a repair reinstall of Windows 11 using the 'Windows Update' recovery option," according to reports following the update's release ^[7].

Evidence from CHIP and other European technical outlets further corroborates that these issues are not localized ^[15]. While Microsoft has officially confirmed the fixes for BSOD and specific Wi-Fi protocols in Build 26200.7840, the company has yet to formally acknowledge the broader range of installation errors like 0x800F0991 or the new Bluetooth disruptions ^[4][8]. These unconfirmed reports suggest that the update's impact varies significantly depending on specific hardware configurations ^[15].

How to Check if You Are Affected

If you suspect your system performance or connectivity has degraded following recent updates, follow these steps to confirm if KB5077181 is the cause.

1. Verify the Installed Update Version

The first step is to determine if Windows 11 has installed the specific cumulative update associated with these issues.

• Open Settings and navigate to Windows Update.
• Select Update history.
• Look for KB5077181 under the "Quality Updates" section ^[1][15].
• Check your OS build number by typing winver in the Start menu; this update typically moves systems to Build 26100.7840 (24H2) or 26200.7840 (25H2) ^[13][15].

2. Identify Installation Error Codes

Many users report that the update fails to install correctly, leaving the system in an unstable state. Check your update history for the following specific error codes:

• 0x800F0991 or 0x800F0983 ^[5][11][15].
• 0x800F0922 ^[5][6].
• 0x80073712 (often indicating missing or damaged update files) ^[5][11].
• 0x80096004 ^[5][6].

3. Check Device Manager for Hardware Failures

The KB5077181 update appears to disrupt communication between Windows and network hardware ^[11][16].

• Right-click the Start button and select Device Manager.
• Expand the Network adapters and Bluetooth sections.
• Look for a yellow exclamation mark (often called a "yellow bang") next to your Wi-Fi or Bluetooth controllers.
• Note that in some cases, the device may appear to be working normally in Device Manager but will fail to maintain a functional connection ^[5][13].

---

4. Monitor for Connectivity and Boot Symptoms

Beyond error codes, specific behavioral patterns have been documented across various hardware configurations, including Alienware and Lenovo systems ^[1][11]. Use the table below to identify common symptoms:

Symptom Category	Observed Behavior
Networking	Wi-Fi status shows "Connected, no internet" due to DHCP errors [8][15].
Boot Cycle	Systems may enter a loop, restarting more than 15 times before reaching the login screen [1][15].
Sign-in	A System Event Notification Service (SENS) error stating "The specified procedure could not be found" [8][15].
Peripherals	Sudden Bluetooth disconnections for headsets or controllers [11][13].
Power State	Unusually long shutdown times (3–5 minutes) or the laptop remaining warm in a bag after a "Shut down" command [13].

5. Review System Event Logs

For a more technical confirmation, you can use the Event Viewer to look for service failures.

• Type Event Viewer in the Windows search bar and open it.
• Navigate to Windows Logs > System.
• Search for "Error" entries related to DHCP-Client or the System Event Notification Service ^[8][15].
• On certain Alienware laptops, a specific boot loop involves the keyboard scanning with a "rainbow wave" for 10 seconds followed by a restart ^[1][3].

If your device exhibits multiple symptoms listed above immediately following the installation of KB5077181, it is likely affected by the known regressions in the February 2026 update cycle ^[14][15].

Solutions and What to Do

Resolving issues caused by KB5077181 requires a structured approach, ranging from immediate software rollbacks to deep system repairs. Because this update is often mandatory for Windows 11 24H2 and 25H2, simply uninstalling it may only provide a temporary solution before Windows attempts to reinstall it automatically ^[2].

---

Short-Term Fixes and Immediate Recovery

If the system is unstable or cannot connect to the internet, the primary goal is to revert to a functional state.

• Uninstall via Windows Recovery: If the PC is stuck in a boot loop or cannot reach the desktop, users can navigate to Troubleshoot → Advanced options → Uninstall Updates → Uninstall latest quality update ^[2].
• Manual Uninstallation: From the desktop, an elevated PowerShell or Command Prompt can be used to run the command: wusa /uninstall /kb:5077181 /quiet /norestart ^[1][2].
• Pause Windows Updates: To prevent the immediate reinstallation of the problematic patch, it is recommended to pause updates for at least seven days in Settings → Windows Update ^[1]. This allows time for secondary driver updates to be applied ^[1].
• Offline Manual Installation: In cases where the automated update fails, users can download the standalone installer from the Microsoft Update Catalog ^[1]. It is often advised to disconnect from the internet while running the .msu installer as an administrator to avoid interference ^[1].

---

Network and Connectivity Restoration

When Wi-Fi or Bluetooth options disappear or fail to connect after the update, specific network resets may resolve the underlying configuration corruption.

Action	Technical Purpose
Netsh Winsock Reset	Resets the Winsock catalog to factory defaults, repairing the "translator" between apps and hardware [32].
WLAN AutoConfig	Restarting this service in services.msc can restore the Wi-Fi toggle if it has disappeared from the taskbar [8].
Network Reset	Removes and reinstalls all network adapters and sets networking components back to original settings [8][32].
Device Manager Check	Enabling Show hidden devices may reveal "ghost" adapters that were disabled during the update process [8].

To perform a Winsock reset, run netsh winsock reset in an elevated command prompt and reboot the system ^[32]. This command specifically targets corrupted registry entries and protocol settings without deleting personal files ^[32].

---

Advanced System Repairs

If installation errors like 0x800F0991 or 0x800F0922 persist, the Windows servicing stack or component store may be damaged ^[2][4][11].

1. Repair System Files: Use the Deployment Image Servicing and Management (DISM) tool followed by the System File Checker (SFC) ^[1][2][4].
   • DISM /Online /Cleanup-Image /RestoreHealth
   • sfc /scannow
2. Reset Update Components: Stopping the Windows Update (wuauserv), BITS, and Cryptographic (cryptsvc) services allows users to rename the SoftwareDistribution and catroot2 folders, forcing Windows to clear the update cache ^[2].
3. In-Place Upgrade: If standard repairs fail, a repair reinstall of Windows 11 using the "Windows Update" recovery option in the Settings app is reported as a reliable solution for persistent installation failures ^[4][11].

---

OEM and Firmware Maintenance

Hardware-specific sensitivities, particularly in high-performance laptops like the Alienware Area-51m R2, often require firmware-level intervention ^[1].

• Suspend BitLocker: Before attempting major updates or BIOS changes, it is critical to suspend BitLocker Drive Encryption in the Control Panel to avoid potential boot loops or recovery key prompts ^[1].
• Update BIOS/UEFI: Outdated firmware is a frequent cause of update failures ^[1]. Ensure the system is running the latest BIOS version from the manufacturer's support page ^[1].
• Clean Driver Installation: Before re-attempting KB5077181, users should manually install the latest chipset, storage, and GPU drivers directly from the OEM support site ^[1]. This minimizes conflicts that lead to the dxgmms2.sys memory management errors observed with this update ^[10].

---

Risks and Limitations

While these steps minimize risks, they do not offer absolute certainty of a fix. Performing a Network Reset will remove saved Wi-Fi passwords and require manual reconnection ^[8][32]. Furthermore, editing system services or using wusa commands should be done with caution, as improper execution could lead to further OS instability ^[1]. If a system continues to experience a "cold boot" loop despite software fixes, a hardware issue—such as a failing CMOS coin cell battery—may be the underlying cause ^[3][15].

Risks Limits and When to Stop

While many software issues can be resolved through manual uninstallation or system repairs, update KB5077181 presents specific scenarios where continued self-repair attempts may pose a risk to your hardware. Knowing when to transition from software troubleshooting to professional assessment is critical to prevent long-term system damage.

Physical Hardware Strain

The most significant risk involves the reported infinite restart cycles, with some systems rebooting more than 15 times consecutively ^[1][8][9]. Frequent, rapid power cycling can potentially place unnecessary stress on internal components. Reports suggest that these loops are particularly aggressive on certain high-end laptops, appearing during "cold starts" and manifesting as keyboard light flashes and repeated power-offs ^[1][3].

SSD Wear and Data Integrity

Repeated failed installations and "undoing changes" cycles involve heavy read/write operations on your storage drive. If a system is stuck in an endless loop, the constant interrupted writes to the SSD may potentially lead to file system corruption or premature drive wear ^[7][12]. If your device fails to reach the desktop after three automated repair attempts, the risk to your data integrity increases significantly.

When to Seek Professional Assistance

It is generally recommended to stop manual troubleshooting and consult a specialist if you encounter any of the following technical barriers:

• Recovery Environment (WinRE) Failure: If the standard method of interrupting the boot three times fails to trigger the Windows Recovery Environment, the system may be "effectively bricked" for standard users ^[9][10].
• Unrecognized Commands: If advanced recovery commands like wusa /uninstall are not recognized or are blocked by system permissions during execution ^[1][3].
• Persistent "Cold Start" Issues: If the boot loop only occurs when the machine is cold, it may indicate an underlying hardware failure, such as a depleted CMOS coin cell battery, which requires physical disassembly to replace ^[1][5].
• Aggressive Reinstallation Loops: If Windows continues to force-install the faulty update immediately after a successful rollback, preventing any stable use of the machine ^[1][7].

---

Scenario	Risk Level	Recommended Action
Wi-Fi/Bluetooth not working	Low	Uninstall KB5077181 and pause updates [2][15].
SENS sign-in errors	Medium	Attempt Safe Mode or sfc /scannow [8][10].
Infinite Boot Loop (15+ cycles)	High	Power down immediately and seek professional repair [1][9].
WinRE or Command Prompt inaccessible	High	Professional BIOS or recovery media intervention required [10].

Warning: Attempting to force a boot by repeatedly hard-resetting the power button can potentially cause electrical damage or data loss if the system is in the middle of a critical registry write.

If the machine does not stabilize after the initial uninstallation of KB5077181, the conflict may reside deeper in the servicing stack or hardware firmware ^[2][9]. In these cases, continued experimentation can lead to a complete system failure that is significantly more expensive to resolve than a standard software recovery.

FAQ

Can I skip or block the KB5077181 update?

Yes, it is possible to temporarily pause the installation by navigating to Settings → Windows Update and selecting the option to pause updates for a period, such as 7 days ^[1]. However, reports indicate this update may be mandatory for Windows 11 24H2 and 25H2 builds, meaning the system may attempt to reinstall it automatically once the pause period expires ^[4][9]. Some users have observed the update reinstalling itself even before the pause period concluded ^[3]. For those already affected, the update can be manually removed using the command wusa /uninstall /kb:5077181 /quiet /norestart in an elevated command prompt ^[1][4].

---

Has Microsoft released a formal patch for these issues?

As of late February 2026, Microsoft has not officially acknowledged critical bugs or released a specific "fix" patch for the boot loops or networking failures associated with KB5077181 ^[8][15]. The official release documentation currently states that the company is unaware of any widespread issues, despite numerous reports of installation failures and system instability on public support forums ^[9][14]. Users are currently relying on manual workarounds, such as system file repairs or uninstallation, until a formal revision is provided ^[4][13].

---

Does this update affect Windows 10 users?

No, the KB5077181 update is a cumulative patch specifically designed for Windows 11 ^[8][14][15]. Windows 10 operates on a different update branch and has not been linked to these specific boot loop or DHCP networking errors in the current reporting cycle ^[12]. While Windows 10 users may experience their own separate update challenges, the issues described here are limited to the Windows 11 ecosystem ^[7][8].

---

Why does my Wi-Fi show "Connected, no internet" after installing the update?

This is a reported networking regression where the update disrupts the Dynamic Host Configuration Protocol (DHCP) ^[8][13]. The system remains physically connected to the wireless access point but fails to receive a valid IP address configuration, rendering the internet non-functional ^[12]. Troubleshooting steps like resetting network adapters often fail to resolve the issue, and current data suggests that uninstalling the update is the only consistent way to restore connectivity ^[12][13].

---

What should I do if my PC is stuck in a boot loop?

If the system cannot reach the desktop, you should boot into the Windows Recovery Environment (WinRE) by interrupting the boot process three times or using bootable media ^[4][9]. Once in WinRE, navigate to Troubleshoot → Advanced options → Uninstall Updates and select Uninstall latest quality update to remove KB5077181 ^[4]. If you can reach the desktop but experience instability, performing a Repair Reinstall via the recovery options in the Settings app has been cited as a successful, albeit time-consuming, solution ^[13][14].

---

Are certain hardware models more at risk?

While the update issues appear broadly related to the Windows 11 servicing stack, specific high-performance laptops like the Alienware Area-51m R2 have shown high sensitivity to this patch ^[1][4]. On these systems, outdated BIOS firmware or specific GPU and network drivers may exacerbate the conflict ^[1]. Industry reports also mention that users of third-party security software or specialized tools like Windows Sandbox and Hyper-V may encounter specific installation error codes like 0x800F0922 ^[13][14].

Summary and Key Takeaways

• The KB5077181 update, released in February 2026, was intended to resolve existing UNMOUNTABLE_BOOT_VOLUME errors but has instead triggered new infinite boot loops and System Event Notification Service (SENS) sign-in failures on various systems ^[7][11][15].
• Significant networking regressions have been reported, including DHCP errors and Wi-Fi connectivity issues where devices appear "Connected, no internet" ^[12][15][17]. These problems primarily affect Windows 11 versions 24H2 and 25H2 ^[11][15][24].
• Primary recovery steps involve entering the Windows Recovery Environment (WinRE) and using the command wusa /uninstall /kb:5077181 /quiet /norestart to manually remove the update ^[9][14][17]. Following uninstallation, running sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth can help repair corrupted system files ^[1][9].
• Because Windows Update may attempt to aggressively reinstall the package after a rollback, it is often necessary to manually pause updates in system settings to maintain stability ^[8][12][14].
• In some hardware-specific cases, such as the Alienware Area-51m R2, boot loop symptoms during cold starts may also be influenced by aging CMOS batteries or outdated BIOS firmware, requiring a dual approach of software repair and hardware maintenance ^[1][4][5].

If a system remains unstable or stuck in a loop, seeking professional technical assistance is often safer than forcing hardware through repeated, unsuccessful boot cycles.

Quellen

^[1] Area-51m R2, boot loop since Windows update KB5077181 | DELL Technologies

^[2] Users report install errors and system bugs after Windows 11’s Feb update

^[3] Strip out Windows 11's bloatware, ads, and other grossness—for free

^[4] Windows 11 update causing BSODs and Wi-Fi issues, Microsoft confirms

^[5] Kein WLAN oder Bluetooth: Neues Windows-Update legt PCs lahm

^[6] Microsoft admits Windows 11 is crashing with some GPUs and says it

^[7] Windows 11 Update: KB5077231 zeigt die neuen Einstellungs-Men�s

^[8] Windows 11 ISO downloads were failing in Rufus — was Microsoft behind it?

^[9] Kein WLAN oder Bluetooth: Neues Windows-Update legt PCs lahm

^[10] Windows 11 users report issues after Feb. 2026 update. How to fix error

^[11] Windows 11 KB5077181: Microsoft claims stability, my Lenovo LOQ proves otherwise

^[12] Microsoft Windows 11 KB5077181 Update Triggers Infinite Restart Loop on Some ...

^[13] De-Enshittify an Existing Install of Windows 11 ⭐

^[14] KB5078127 - Details, Issues, & Feedback - NinjaOne

^[15] Windows 11 KB5077181: Update causes boot loops, DHCP errors, and sign-in fail...

^[16] Windows 11 Update KB5077181 Causes Issues for Some Users

^[17] How To Fix KB5077181 Update Triggering Restart Loops & Network Failures I...

^[18] Fehlermeldungen statt Fortschritt: Update ärgert Windows-Nutzer weltweit

^[19] Fix Sound/Audio Problems In Windows 11

^[20] CHUWI CoreBook Air Plus 16 review - Part 2: An AMD Ryzen 5 6600H-powered, mid...

^[21] Windows 11 boot problems can be fixed by KB5077181 update: Microsoft

^[22] Windows 11 KB5077181 fixes Nvidia black screen bug | tbreak

^[23] Windows 11 KB5077181: La actualización provoca bucles de arranque, errores DH...

^[24] Update KB5077181 vom Feb. 2026 korrigiert Windows 11 24H2/25H2 Boot-Probleme

^[25] [Fixed] Windows 11 WiFi Not Showing Up (17 Ways)

^[26] Wifi Option Disappeared Windows 11 After Update Fix Solutions » SK TECH ...

^[27] Windows 11 Update KB5077181 Resolves Boot Failures from Previous Update Errors

^[28] The 5 Most Reliable Mesh Wi-Fi Routers, According To Consumer Reports - BGR

^[29] KB5077181 - Details, Issues, & Feedback - NinjaOne

^[30] Reddit erupts over KB5077181: New update triggers rhythmic gaming stutter

^[31] Windows 11 update KB5077181 causes freezes in games, although it should fix them

^[32] Netsh Winsock Reset: How to Fix Windows Network Problems in 2 Minutes

^[33] 4 PowerShell commands that fix common Windows problems fast

^[34] Upcoming Windows 11 update to come with new and useful features

^[35] Opinion: Windows 11 isn’t the disaster some claim - and it’s time to say so

^[36] New Windows 11 Update KB5077181 Is Causing Boot Loops and System Crashes - Ha...

^[37] Windows 11 KB5077181 Fallout: Update Failures, Gaming Crashes, and the Trust ...

^[38] I thought my laptop battery was dying, but these settings were the real problem

^[39] 8 Essential Tips to Boost MacBook Battery Health and Extend Its Lifespan in 2026

^[40] KB5077231 Windows 11 25H2 [Manueller Download] 26220.7872 im Beta-Kanal zum W...

^[41] Windows 11 KB5077181 targets Nvidia gaming bugs and explorer.exe crashes

^[42] Windows-Update KB5077181 stürzt Systeme in Chaos

^[43] 5 reasons your Bluetooth keeps disconnecting (I finally figured it out)

^[44] Windows 11 update KB5077181 causes freezes in games, although it should fix them

^[45] Windows 11 February 2026 Update Fixes GPU Crashes & WPA3 Wi-Fi Issues (K...

^[46] XFN 1.1 profile