testing hardware - use what software ?

[David Timms]

Tim wrote:
> On Fri, 2008-05-23 at 23:35 +1000, David Timms wrote:
>> I have a PC that is failing intermittently. What are the best choice
>> for attempting to pinpoint a hardware fault 
> 
> By checking the hardware, directly, rather than playing with software.
Yes, and shoot it with the heat gun and so on. But is there some 
software designed to do stress testing ?

I'm talking about a machine that has had swaps to power supply, disk, 
ram, ram slots, is clean, reinsertion of cards etc, yet nothing 
definitive is showing up.