Laptop reboot instead of shutting down

[oldcpu]

@malcolmlewis

Hi
Does the same issue occur on the WinX side as well?

I think it does. In post # 5 above, the OP reported:

@KittyKatty

I also did an experiment with shutting down Windows and the same thing happens (which seems to point to a bios issue).

It does suggest a BIOS misconfiguration (or hardware issue), but as to which? I don’t know how to diagnose the specifics, and can only suggest trial and error changes in BIOS.