BSODs during gaming Win7

[CoinOp]

I just built this new computer:

AMD Phenom II X4 975
Windows 7 (Build 7600)
CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : AMD Phenom II X4 975 Processor
CPU EXT : MMX(+), 3DNow!(+), SSE (1, 2, 3, 4A), x86-64, AMD-V
CPUID : F.4.3 / Extended : 10.4
CPU Cache : L1 : 4 x 64 / 4 x 64 KB - L2 : 4 x 512 KB
CPU Cache : L3 : 6144 KB
Core : Deneb (45 nm) / Stepping : RB-C3
Freq : 800 MHz (200 * 4)
MB Brand : Asus
MB Model : M4N75TD
NB : NVIDIA nForce 740a SLI rev A2
SB : NVIDIA nForce 740a SLI MCP rev A2
GPU Type : NVIDIA GeForce GTX 570
GPU Clocks : Core 732 MHz / RAM 1900 MHz
DirectX Version : 11.0
RAM : 8192 MB DDR3 Single Channel
RAM Speed : 666.7 MHz (3:10) @ 9-9-9-24
Slot 1 : 4096MB (10700)
Slot 1 Manufacturer : G.Skill
Slot 2 : 4096MB (10700)
Slot 2 Manufacturer : G.Skill

Whenever I try to play Modern Warfare 2, Unreal Tournament GOTY, or the Crysis 2 demo the computer freezes up with a black screen with a repeating bit of noise that goes on for 10 or so seconds before it goes away and the monitor turns off. I then have to reset or turn off the PC and start it up. It gives me a BSOD report and the following:

Problem signature:
  Problem Event Name:	BlueScreen
  OS Version:	6.1.7600.2.0.0.256.48
  Locale ID:	1033

Additional information about the problem:
  BCCode:	124
  BCP1:	00000000
  BCP2:	870820DC
  BCP3:	00000000
  BCP4:	00000000
  OS Version:	6_1_7600
  Service Pack:	0_0
  Product:	256_1

Files that help describe the problem:
  C:\Windows\Minidump\030511-14617-01.dmp
  C:\Users\Tom\AppData\Local\Temp\WER-22479-0.sysdata.xml

I'm not tech savvy enough to have found any problems. I have appropriate cooling for my case and all cables are properly plugged in and my GPU securely housed.

Any help to figure this out would be most appreciated as I spent a good amount on something that can't deliver.

EDIT: I will obtain any info needed to help diagnose the problem, I just don't know what to post.

 

[Mark56]

Your memory is running in single channel, try moving your mem sticks so you have them in the same coloured slots, that should then give you dual channel operation which should improve things. You should be using slots 1 & 3 or 2 & 4 check for information on this in the motherboard manul.

This link gives some usefull information for diagnosing the cause of error 124.

http://www.sevenforums.com/crash-lockup-debug-how/35349-stop-0x124-what-means-what-try.html

Is your Windows 7 64bit, if it is only 32bit it will not be using more than 4GB of the installed memory.

 

[CoinOp]

The problem was with the video card. It would heat up and expand the plastic cover and fan causing them to touch and stop spinning and overheat and bazinga. RMAing it tomorrow and buying EVGA. Never again PNY, never again.