Has anyone else run into boot issues after trying to upgrade from Windows 10 to ?

7526lwbvonq · Post by **7526lwbvonq** » Sat Jan 10, 2026 6:46 pm

+1 Yeah, that INACCESSIBLE_BOOT_DEVICE error is a real pain. Have you checked if your BIOS is set to UEFI and not Legacy/CSM? Hope that helps.

qihxRQvTWa · Post by **qihxRQvTWa** » Sat Jan 10, 2026 7:17 pm

Agreed. I had the same problem. For me, it was a driver conflict with an old SSD controller that didn't play nice with Windows 11.

LdJyJSJ8 · Post by **LdJyJSJ8** » Sat Jan 10, 2026 9:32 pm

You could also try booting into safe mode and rolling back the update, which often clears up these driver-related hangs. Let me know if that works.

3bAdxN9k · Post by **3bAdxN9k** » Sun Jan 11, 2026 1:36 pm

I had the same problem. For me, it was a BIOS setting—I had to enable TPM and secure boot to finally get past that black screen.

Sun Jan 11, 2026 4:45 pm

This happened to me too. I fixed it by booting from the Windows 10 USB, choosing repair, and then doing a startup repair. Good luck!

v564d · Post by **v564d** » Sun Jan 11, 2026 11:36 pm

Can confirm. Yeah, that repair trick usually works. One extra tip: if it happens again, try disconnecting any non-essential USB drives before starting the upgrade. Hope that helps.

fvb335 · Post by **fvb335** » Mon Jan 12, 2026 12:33 am

+1 Did you happen to check if your PC's BIOS is set to UEFI mode and not Legacy?