My motherboard (i think it's that) restarts from time to time.
No reason, just 'restart'.
The dealer has already looked at, but couldn't find anything wrong.
I'm 'sure' that's something to do with the settings.
when i bought it, i had the problem. I've changed something in the bios, and then it ran for about a year or so.
Now i've reset the bios since i had a problem to install the new ubuntu. (i forgot the issue with the reboots).
And now, the problem is back.
Restart from time to time. Sometimes 1 hour, sometimes 5 minutes. Sometimes i've got 10 programs open, sometimes none...