Invisible process killing the CPU

[Nagy László Zsolt]

> Possible hardware problem perhaps? Are you able to run a "burn-in" 
> test on the machine?
What is that? How can I perform that? (Tomorrow the machine will be 
free, I can play with it.)
I can imagine that the processor is overheated and so the frequency was 
reduced by the BIOS. But that does not explain why I cannot see the 
process using the CPU. An invisible process eating up CPU time cannot be 
a hardware problem, can it?
>
> Stabbing in the dark really.
Mee too. :-(