My PC is stuck on the UEFI splash screen (screen with UEFI logo and F-key options) and the PC isn't responding to anything, including the keyboard, and the only way to exit is to physically shut it down.
- I have been using this same setup since 2015 and saw a lot of people having this problem when RAM was changed or plugged in the wrong slots, but I haven't moved the RAM since 2015
- I don't overclock, with RAM and CPU running at default voltages
- The only UEFI setting that is non-default is CSM [Compatibility Support Module] Mode is disabled in order to fix Error 0xc1900101 for Windows 10 (CSM Mode is not used after Windows 8 anyway)
- Others had this issue after a UEFI firmware upgrade, but I have been using v5.80 for months without an issue before this happened, and I won't try to upgrade to UEFI v6.0+ since v5.80 is the last release compatible with Summit Ridge CPU; Asrock officially states:
ASRock does NOT recommend updating this BIOS if Pinnacle, Raven, Summit, or Bristol Ridge CPU is being used on your system.
Specs:
- MB: AsRock AB350 Pro 4
- UEFI: v5.80 (AGESA 1.0.0.1)
- CPU: AMD Ryzen 5 1600X (Summit Ridge)
- RAM: 2x 8GB DDR4 Ballistix Elite
(unsure of the exact model, may be BLE8G4D26AFEA or BLE2C8G4D26AFEA)
What hasn't worked:
- Rebooting the PC
- Powering down the PSU (switch and cord), pressing the power button for several seconds to discharge the MB circuit, then turning the PSU back on and booting
What has worked: Clearing CMOS
- Switched off PSU and cleared CMOS by changing the jumper [Manual page 25]
- Switched PC on (locked in a 3s boot loop), switched off PSU, and changed the jumper back to normal position
- Switched PC on, PC reboots ~3x in a ~3s loop, then it worked normally again
I have been able to use my PC for ~2d, rebooting it several times without issue, then the issue began again, and it will be a nightmare if I have to open my case and reset the CMOS every 2 days.
Any clue of the origin of the issue?
