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.

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

If your computer is not booting with the two RAM sticks, the problem might be with your RAM sticks or the RAM slots. In this case, you can do one thing. Insert only one RAM stick at a time and start ...

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

At one point or another, just about every skier has experienced the emotional roller coaster of finding a good pair of ski ...

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 ...

Depending on how your Mac has been used, especially if users have multiple operating systems installed or if they've just freshly installed their system software, the computer may boot and display a ...

In practice, Windows Fast Startup is supposed to be helpful, but after disabling it, a lot of things actually got a little better for my computer. I wish I had turned it off sooner, and for some of ...

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 ...

I'm having a curious issue with an Asus desktop computer. A cold boot will always boot up perfectly fine. But a restart will usually (but not always) leave me in a boot loop of Windows briefly ...