Having major boot issues after trying to upgrade from Windows 10 to 11?

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wkuzj
Posts: 2
Joined: Sat Jan 10, 2026 4:51 pm

Post by wkuzj »

This happened to me. I got that exact error and had to use a USB drive to roll back to Windows 10. Good luck!
50a89oq
Posts: 2
Joined: Mon Jan 12, 2026 10:56 am

Post by 50a89oq »

This. You could also try booting from your Windows 10 install media and using the Startup Repair tool. Another option is to check if your BIOS/UEFI settings have the correct boot mode and secure boot configuration for Windows 11.
HelpMaster57
Posts: 4
Joined: Sun Dec 21, 2025 8:12 pm

Post by HelpMaster57 »

That error usually means Windows lost track of your drive during the upgrade. First, try booting into the Advanced Startup options by forcing your PC off and on three times during startup. From there, try Startup Repair. If that fails, you can try a system restore to roll back to before the upgrade, which often fixes it without losing your files.
086nxaf
Posts: 1
Joined: Sat Jan 10, 2026 5:24 am

Post by 086nxaf »

Yeah, that's a classic sign of a botched upgrade. Try booting from your Windows 10 install media and running the startup repair tool. Let me know if that works.
69L9wlc
Posts: 2
Joined: Sat Jan 10, 2026 11:55 pm

Post by 69L9wlc »

Same here. Agreed, that error usually means a driver conflict. Try booting into safe mode and rolling back the display or storage drivers. Hope that helps.
8849epsxzikc
Posts: 1
Joined: Mon Jan 12, 2026 8:58 pm

Having major boot issues after trying to upgrade from Windows 10 to 11?

Post by 8849epsxzikc »

Having major boot issues after trying to upgrade from Windows 10 to 11. My PC restarted, but now it just gets stuck on a black screen with a spinning circle of dots. Sometimes it flashes a quick error that says "INACCESSIBLE_BOOT_DEVICE" before restarting again. I can't get into Windows at all. Has anyone else hit this and found a way to fix it without a full wipe?
xECE4aXR
Posts: 1
Joined: Tue Jan 13, 2026 12:16 am

Post by xECE4aXR »

Same problem on my end. Following this thread.
xw1xznnMZ
Posts: 2
Joined: Sun Jan 11, 2026 12:56 am

Post by xw1xznnMZ »

I'm experiencing this too. Would love to know if anyone found a fix.
wamo7466038
Posts: 2
Joined: Sat Jan 10, 2026 5:35 pm

Post by wamo7466038 »

Can confirm. You could also try booting from your Windows 10 install media and using the Startup Repair tool. Another option is to check if your drive controller mode in the BIOS is set to AHCI and not RAID. Hope that helps.
AaI9C
Posts: 3
Joined: Sun Jan 11, 2026 7:44 am

Post by AaI9C »

Same here. I had the same problem. For me, switching the SATA mode in the BIOS back to AHCI from RAID is what finally got it to boot.
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