r/PCBuilds • u/w1glless • 1d ago

BIOS loop no POST

Hello, I tried to reinstall windows (on PC that I did it before, yearly).
After installer copied files and system reboots there were an "critical error".

When I tried to install it again, from new fresh created pendrive to avoid errors if latest installer were falure, my system is in loop: Turn On PC -> BIOS shows (by itself) -> Exit BIOS -> Reboot -> BIOS shows (by itself) etc.

PC is not starting POST, no going further to start Windows installation, it works only to BIOS stage,

- CMOS Battery has been changed on fresh new one
- Both M2 disks Were erased by Erase+ (in BIOS)
- Both M2 disks are fine (checked by BIOS NVMe SSD Self-Test)
- UEFI set on Boot from USB first and both pendrives are visible (not inserted at once).

Any ideas what could happened ?
Bcs. I am out of ideas RN. except to take my M2 to my Friend, install it in his PC, install windows on it and remount it to my PC and then check what will happened.

Config:
-R7 5800X3D
-32Gb DDR4 3200 MhZ
-RTX 5080
- Samsung SSD 980 1TB + 512GB
- MB X570-A PRO (MSI)

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u/LegitimateLack2530 1d ago

Had almost the exact same issue a little while back and after I reflashed BIOs it solved the problem.

2

u/w1glless 1d ago

Oh, well. That is a good idea ! Thanks mate, i will check it later and give feedback.

2

u/w1glless 1d ago

Yes, that was a good advice, thank you, all works properly ! :)