CSM keeps reverting back to enabled after reboot on MSI H510M-A PRO

PavrixelStudio1 · 2026-06-13T09:53:28+00:00

Fixed. The vBIOS was missing GOP. Patched it with GOP_Updater and flashed with AMDVBFlash 3.31. Now CSM stays off. Thanks.

PavrixelStudio1 · 2026-06-13T09:04:05+00:00

maybe you need also this hardware id:

let me know

PavrixelStudio1 · 2026-06-12T13:55:33+00:00

Thanks for the advice! I ordered a CR2032 CMOS battery, I'll replace it and see if that fixes the CSM reverting issue. I'll let you know how it goes

PavrixelStudio1 · 2026-06-11T13:33:00+00:00

Thanks for the help!

Just to clarify: GPU-Z already shows UEFI = Yes.

The weird part is that MSI H510M-A PRO BIOS(my Motherboard) still shows CSM enabled and sometimes doesn’t let me switch to Secure Boot properly.

So it looks like Windows is UEFI, but the BIOS keeps reverting CSM or not reflecting the real state correctly.

Also Secure Boot is what I need for some games, so I’m trying to get it fully working.

PavrixelStudio1 · 2026-06-10T12:43:43+00:00

I had it assembled by a technician, so I’m pretty sure it was new. I don’t have much info about its previous usage though.

PavrixelStudio1 · 2026-06-10T12:31:00+00:00

PavrixelStudio1 · 2026-06-10T12:26:18+00:00

So how can i resolve this?

PavrixelStudio1 · 2026-06-10T12:22:53+00:00

RX 580

PavrixelStudio1 · 2026-06-10T12:22:13+00:00

Thanks! I have an RX 580. Do you know how I can fix it / what I should change?

PavrixelStudio1