Best way to stress test a PC for HW probs?

Problems now solved (booted to a blinking cursor)........

New hard drive and new opsys new graphics card.

I suspect a possible mobo anomoly - intermittent.

Alll Dell tests passed.

Whats a good way to stess test a PC? Dell Optiplex  780

fcekAsked:
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coredatarecoveryCommented:
I'd pull and exchange the RAM, it's not unlikely to be a stick of RAM causing the issues.

I'd download UBCD and run the memtest+ for several hours.

There's lots of stress testers, but I'd worry about the ram the most, it can corrupt in different ways and cause issues that look like other things.

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dbruntonQuid, Me Anxius Sum?  Illegitimi non carborundum.Commented:
Prime 95 http://files.extremeoverclocking.com/file.php?f=103 and http://www.mersenne.org/freesoft/

If you use Prime95 also check temperatures while running.  Use Speedfan http://www.almico.com/speedfan.php for example to do so.
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_Commented:
OpenSourceMark is also worth a look:
http://sourceforge.net/projects/opensourcemark/
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nobusCommented:
this exercises all devices    http://www.passmark.com/download/index.htm            Burnin test
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