"Dave Plowman (News)" wrote in message
...
Right - determined to sort this out today.

Started the machine (for the first time today) in setup and found the
page which gives CPU temperature, etc. Said should be 72C. Over the short
period I watched it it climbed from 50C to 80C then shut down. The fan was
running normally.

Is there anything that could cause the CPU to overheat this quickly -
some form of abnormal load?

The heat sink is not fitted correctly.. take it off and do it again.
Next time buy an Intel.