Crash: Bluescreen - any help appreciated!

Okay, MemTest 5 passes returned nothing. I will run that over-night to see if more passes result in anything.

Used HD Tune (free) to test my hard-drive, 0% damaged blocks returned.

Now I'm running Prime95 stress test.

Okay, system has been up and running for about 3 hours now. Not a single bluescreen. Feels nice.

Not sure if it is entirely fixed - but, considering Jonathan_King's signature regarding posting what you did to 'fix it' to help others: Here is what I did.

1) Uninstalled my nVidia (graphics card) drivers. Reinstalled new drivers.
2) Did a fresh reinstall of nVidia Physx.
3) Uninstalled all ISO Image Mounting software (PowerISO and DaemonTools Lite)

At this stage, I had a BSOD, which was apparently caused by hardware malfunction.

4) Downloaded Memtest, burnt to cd, ran for 5 passes - memory okay.
5) Downloaded Prime95, Stress Tests ran for 4 hours - Blend and Small FFT - all okay.
6) Downloaded HD-Tune, full hard-drive scan returned 0% damaged blocks - hard drive okay.

7) Found updated driver software for my chipset (motherboard). Had to download Vista 64bit version, since there was no equivalent Windows 7.

And so far, so good. No blue-screens.

If from what I understand (have learnt in the past 6 hours) about BSOD's - the computer performs a 'dump' of exactly what it is doing the moment the user see's blue. This information is useful (to those who know how to understand it ) and allow us to pick out step-by-step what our computer has tripped up on, and helps isolate individual drivers or files which are suspect. Which in turn gives us a hint as to what causes the BSOD.

Would it be safe to say that I was suffering from multiple BSOD's? First, software malfunctioning, possible driver conflict (dodgy install?), and 'notorious image mounting driver'. Secondly, hardware failure - maybe due to out-of-date drivers in use for the chipset?

Anyways, I will post back here if I do get another Bluescreen. Thanks to all those that have helped - if it is well and truly fixed! And if not, you'll be hearing from me soon!

Might I suggest a stickied-thread?
1st - Software Fixes:
Uninstall + Reinstall fresh drivers.
Uninstall suspect software (image mounting software: DaemonTools / PowerISO etc)

2nd - Hardware Checks:
Memtest,
Prime95
HD Tune
etc?
(Is there a way to test a graphics card? For memory/hard-drives it is relatively simple to alter your system accordingly and by trial and error ascertain which piece of hardware is giving you grief - but with graphics cards, it is slightly harder to chop and change unless you have a stock of them somewhere :))

Anyways, this is a lengthy thank you and farewell until next time I guess!
*clicks submit reply - and prays no more BSOD*

Up time close to 6 hours now - no bluescreens. Whatever I did, it appears to be fixed. Thanks once again and happy glitch-fixing.