I would suggest you to update Intel HD graphics driver, from
http://downloadcenter.intel.com/Default.aspx.
Code:
0: kd> lmvm igdkmd64
start end module name
fffff880`04a35000 fffff880`055e4420 igdkmd64 (deferred)
Image path: \SystemRoot\system32\DRIVERS\igdkmd64.sys
Image name: igdkmd64.sys
Timestamp: Mon Nov 29 10:53:11 2010 (4CF338BF)
CheckSum: 00BB72A0
ImageSize: 00BAF420
Translations: 0000.04b0 0000.04e4 0409.04b0 0409.04e4 Let us know what happened.
At the same time, Clean the inside of the computer, including the motherboard, very carefully.
BTW, what is there in your PCIe slot, when you use intel HD graphics?