Hello,

Could you enable driver verifier?

Driver Verifier - Enable and Disable

Also, look for another graphics card to use. If you have a PCIe video card, remove it, and use the onboard graphics if possible. You can also borrow one from a friend.

...Summary of the dumps
Code:

Built by: 7600.16539.x86fre.win7_gdr.100226-1909
Debug session time: Sat Nov 27 21:58:07.001 2010 (UTC - 5:00)
System Uptime: 0 days 0:47:17.984
Probably caused by : ntkrpamp.exe ( nt!IopCancelAlertedRequest+1c )
DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT
BUGCHECK_STR:  0x8E
PROCESS_NAME:  rockmelt.exe
FAILURE_BUCKET_ID:  0x8E_nt!IopCancelAlertedRequest+1c
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии``