Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.

Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...

Windows 11 KB5074109 (January 2026 Update) is causing major issues on some PCs, and Microsoft has more details to share.

Microsoft released unplanned updates over the weekend. They correct errors in the January patches and bring new boot certificates.

Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...

Another week, another big Windows problem.

The “bootrec /fixboot access is denied” error usually occurs when trying to fix Windows 10 boot error. If by any chance, you’re faced with the same dilemma and ...

I am in charge of upgrading a small computer lab from Windows XP to Windows 7 and I'm having a hell of a time with it. One quirk of these computers is that they don't have a DVD drive, so I've made an ...

Troubleshoot Highguard launch issues with our guide covering Secure Boot, Easy Anti-Cheat, file integrity checks, and more.

If you see Start PXE over IPv4 on MAC error during boot on your HP, Dell, Lenovo, etc. computers, it can happen if a bootable operating system cannot be found. This ...

"Disk Error" appears when attempting to install Windows XP via Boot Camp Occasionally users who are installing Windows XP on their Mac receive a message reading, "Press any key to boot from CD.