What kind of crash is it. (BlueScreen?) (Back to Desktop?)
If an error message appears on your desktop, please tell us Error ID
PC turns off like the plug has been pulled out
This problem just arose. Have you played games on your Windows 7 Before? Because mine started crashing when I had windows 7.
yep, never had this with XP
Did anything else recently happen to your computer?
nope
Could you Run RealTemp Program and measure it during the gameplay? Or did you already do that.
Motherboard 26 °C (79 °F)
CPU 40 °C (104 °F)
CPU #1 / Core #1 36 °C (97 °F)
CPU #1 / Core #2 36 °C (97 °F)
CPU #1 / Core #3 36 °C (97 °F)
CPU #1 / Core #4 36 °C (97 °F)
MCP 45 °C (113 °F)
Aux 40 °C (104 °F)
GPU 47 °C (117 °F)
GPU Memory 39 °C (102 °F)
GPU Ambient 36 °C (97 °F)
Do you have another computer compatible with your graphics card? If yes, can you test it with that computer?
nope, just the one PC and two MACs
Try a registry cleaner, it may be harmful to get freeware ones. I recommend Norton.
done 
Try Error Checking (rightclick C:/ -> properties -> Tools
none
Windows 7 also has some other curing things.. I forgot what i went through.
Do any other games work? No not solitaire i mean 1 gig+ games.
Only other game iv got is assassins creed and the total war games.....non of have issues.
and here are my Voltage Values
CPU Core 1.32 V
+3.3 V 3.36 V
+5 V 5.26 V
+12 V 12.36 V
+5 V Standby 5.02 V
GPU Vcc 3.32 V