Bdod im lost on what to do

where do i start about 2 months ago i upgraded my system bought a E8500 cpu and 4870x2 gpu
computer was fine before that no blue screens at all,was getting bsod all the time thought it was my gpu so bought a gtx 470 and i also bought new ram 4gb black dragon,installed windows 7 again but NO bsod again,
im getting the same error PAGE_FAULT_IN_NONPAGED_AREA its usually a memory error but its brand new and ive tested it with memtestx86 passed here is a list of the errors

PAGE_FAULT_IN_NONPAGED_AREA 0x00000050 ntoskrnl.exe
PAGE_FAULT_IN_NONPAGED_AREA 0x00000050 spsys.sys
PAGE_FAULT_IN_NONPAGED_AREA 0x00000050 atapi.sys
PAGE_FAULT_IN_NONPAGED_AREA 0x00000050 ataport.SYS
PAGE_FAULT_IN_NONPAGED_AREA 0x00000050 nvlddmkm.sys then one says

0x00000124 ntoskrnl.exe
im really going crazy dont know what to do cant figure out whats the problem after i bought the new gpu and memory i thought that would clear it up maybe its cpu or motherboard maybe even psu or hd here is the full specs

E8500
Asus P5Q-Deluxe
Gtx 470
4GB Black dragon p8500 1066ram
Akasa Powermax 850w here is the link for psu specs

http://cgi.ebay.ie/Akasa-Powermax-850w-High-Spec-Power-Supply-/300448863045?cmd=ViewItem&pt=UK_Computing_PowerSupplies_EH&hash=item45f425d345

cpu failed on prime 95 in place large ffts with this error
[Sat Jul 31 13:48:08 2010]
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
[Sat Jul 31 16:31:54 2010]
Self-test 8K passed!
Self-test 8K passed!
[Sat Jul 31 16:47:35 2010]
Self-test 10K passed!
Self-test 10K passed!

memory tested and is fine

im really stuck as to what the problem may be dont want to buy a new cpu and find out its the motherboard or psu or even hd any help would be gladly taken
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More about bdod lost
  1. It has to be the CPU. Try and RMA it to intel. The RAM you've switched, and the mobo you were using before.
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