PartyBoy,
Those event errors are two and three months old so they're not relevant.
The next time this happens, instead of resetting, turn it off and unplug it from the wall.
Wait at least 30 seconds and then plug it back in and start it up.
If it consistently resolves the problem there is a good chance that it's you power supply.
If it makes no difference then I would unplug it from the wall and open up the side cover.
Check every connection, cables, ribbons, even check your peripheral cards in their slots.

