Strange PC restart/freeze issues

Are those old installations you're working with, or did you install the OS directly on this machine?
If you migrated the installation from another computer, you'll need to re-record it. If it’s native to this PC, try using the driver from that link instead

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I managed to track down the manual on the motherboard manufacturer's official website🤷

I installed the OS on that PC. It’s weird, though... the manual says one thing, but reality tells a different story. I'm positive this is the right motherboard, though. Maybe I'm running a different BIOS version? I'll give that link a shot. Thanks.

Well, did you even bother installing the chipset drivers for the motherboard?

Try setting the BIOS to "compatibility mode / IDE mode" if that option is available.

I went ahead and installed all the drivers. Maybe that'll do something.

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Thanks.

I've got the latest BIOS version installed. Hm.