Update: tonight it made randomly shut off and turn on but with artifacts, after rebooting it the artifacts were gone.
I really don't know what to do now. :(
The problem is my pbo and cpb are already disabled ( the "auto-overclock" thing).
I tried to downgrade and to upgrade my bios but nothing change.
This is the very common WHEA reboot issue. Symptoms are WHEA errors in Windows event logger, and reboots with a black screen (no bluescreen) at idle or near-idle. Try a beta BIOS with AGESA 18.104.22.168, there are some indications this helps. I'm up to 2 days stable now with it.
Hello, thanks for your help but I don't seem to find a agesa 22.214.171.124 for my motherboard (asrock b450 pro4) I don't know if it isn't for asrock or if I just can't find it.
If you can't get a BIOS with AGESA 126.96.36.199, disabling CPB and setting an all-core clock typically fixes it too. But you will lose some single-core performance.