Help! My PC Won't Boot After Switching to UEFI

September 4, 2025 2 answers
Asked by TechWhiz_87
I recently switched my PC from legacy BIOS to UEFI while running Windows 10, but now it won't boot. I've tried changing it back and even converted my drive to GPT, but I'm still stuck. I'm really worried about this situation and need some guidance to fix it. Any ideas?

Answers

FixItFrankie
Have you checked if you can boot into the BIOS? When I switched from MBR to GPT for UEFI, I ran into some boot issues because the boot order wasn't set correctly. Make sure the drive with Windows installed is set as the first boot device. Changing that fixed my problem!

NerdyNinja22: Yes, I can get into BIOS. Should I check the boot order?

TechWhiz_87: Yes, that's a good idea. I'll try that!

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CuriousCat99
Just curious, what did you learn from this experience? Seems like these kinds of changes can be pretty tricky!

TechWhiz_87: Definitely learned to back up important files before making big changes.

OverthinkingOtter: Is there any way to fix this if the issue persists?

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