Re: BSOD tried everything...PLEASE HELP
I am guessing you have added your own ram at some point as you have a strange number achieving 5gb using :
- #dimm1 : 1024 MBytes
- #dimm2 : 1024 MBytes
- #dimm3 : 2048 MBytes
- #dimm4 : 1024 MBytes
The serial numbers are close, on dimms 1, 2 and 4 but I'm guessing you added the 2gb stick in dimm 3 yourself ?
The 1gb sticks where made Week 52/Year 08 whereas the 2gb stick was made Week 03/Year 09 which means the metals value is very likely to be very different so affecting the component quality which will consequently make the RAM behave differently under load and produce parity errors only measurable in use by an O/S
The first thing I would try is remove Dimms 2, 3 and 4 and try and get your system to crash using just the one stick,
If that works ok then add the other 1gb sticks back in, retest and stress, then finally try the 2gb stick which I am guessing Will reproduce your crash 
Let us know how it goes
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