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

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

This comes just hours after reports that another emergency update has been issued by Microsoft to affect other problems ...

After the first update stopped PCs from shutting down or going to sleep, the latest one halts the boot-up process. Microsoft ...

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

For some reason lately my computer has been having very much trouble when booting up after sitting off for a couple hours. Once the computer is up and running, everything is perfectly fine, but ...

If your Windows 11/10 computer won’t boot with a second hard drive plugged in, then first make sure the drive is working properly and there are no issues with it. Having done that, try these ...

Frustratingly common for PC users, boot problems can stem from a variety of software and hardware glitches. A particularly frequent issue is when a Windows computer ...

There may be times when booting into Windows via Boot Camp may not display the desired screen resolution. In some instances this might happen after attempting to customize the hardware or driver ...