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

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

It's not just January's one.

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

The residual charge in capacitors can cause boot issues with computers sometimes. You can drain this residual charge by performing the hard reset. The steps to do this are as follows: Turn off your ...

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

Struggling with the dreaded "Inaccessible Boot Device" error on your NVMe drive in Windows 11? Discover proven, step-by-step ...

The first step that you should do is perform a hard reset. Sometimes, the problem occurs due to the residual charge. In this case, hard resetting your PC can help to fix this issue. This process will ...

When Windows won’t boot up, it can be a disturbing experience. But that moment passes quickly, and you must decide how to get past this (hopefully) temporary hiccup. Fortunately, there are plenty of ...

The fix is for a bug that prevents some systems from shutting down, while another bug that prevents hibernation has no ...