Blue Screen Problems with New Build

Sorry for this guys - First post here - But never needed help before :x

Started a new build yesterday spec is as follows:

OS: Windows XP 32 Bit
Motherboard: DFI Lanparty UT ICFX3200 T2R/G
Processor: Intel Core Duo 2.67ghz (Think it's called the E6750)
Memory: 4gb (4x1gb) OCZ Special Ops 6400 5-5-5-12
Graphics: Gecube Ati HD2900XT 512mb
Psu: Coolermaster Real Power Pro 850w
CPU Fan: Zalman CNPS7700
Optical no1: LG GSA-H30NBAL Sata DVD-Rw
Optical no2: LG GDR-8164
HD: Western Digital Caviar 500gb
Case: Antec P180
Also have a Dynamode Wireless card - But pretty sure that's not a problem since the problems still occur when I take it out, and when I put a D-link card in it's place.

During install of windows I had various blue screens which dissapeared when I removed one of the sticks of ram - Checked after windows had installed and it said 3.25gb with the supposed faulty stick in, confirming my suspicion - It's been removed now, leaving me with 3gb of ram and will probably be replaced - Back to the story...

I've installed latest Direct X and latest ATI drivers, but whenever running a heavy duty game or program - Or sometimes even when running a video - the PC either randomly freezes, randomly reboots or randomly Blue Screens giving me errors either saying "IRQL_NOT_LESS_OR_EQUAL" or pointing at "ati3duag.sys", or "win32k.sys".

Anyone see a fault in the spec in terms of compatibility? And if that's not it, can anybody suggest possible ways I can shorten the list of possible problems?

If anybody would like to look at certain error codes shown during the BSODs I can post them, since I recorded them when I saw them.

Thanks for any help!

 

Have you tried swapping out your video card?

 

Not yet - Don't have another PCI-E Graphics card at hand this moment and the motherboard doesn't have any onboard as far as I know - Expecting to have another graphics card I can try it with tommorow.

Any other suggestions I can try in the mean time?