Htnakirs wrote:

Since you have changed almost everything, try using
a different cabinet. Probably the wires/plugs coming
from the cabinet's reset/power buttons are shorting.

Unlikely, and the event log will prove that.

If it is driver related, it would occur immediately after some
event, and not randomly. Try to identify this event. It could
be anything from running an app to plugging a device.

And the event log should make it obvious that its not random.