Granted, if my darkened room saw any sun at this time of the year!
The thing switched itself off again last night - it had been left on during the evening (only) and I arrived back after a couple of hours, started to work on it - and <poof>! off it went.
So it wasn't the sun doing this - it must be overheating in some way - sitting on a dining table in the dark!
-------------------- Aren't computers wonderful... when they work!