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.

Microsoft has linked recent reports of Windows 11 boot failures after installing the January 2026 updates to previously failed attempts to install the December 2025 security update, which left systems ...

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 ...

Troubleshooting a problem computer requires patience, know-how, and a lot of trial and error. Booting your PC in a clean configuration can help automate the process ...