Hi zanthodin and Welcome to The Forum.
STOP 0x0000009F: DRIVER_POWER_STATE_FAILURE
Usual causes: Device driver
Your dump file lists pci.sys Sat Nov 20 09:19:11 2010 as the probable cause. This is a Windows System file and for it to be the cause of your crash is highly unlikely.
Old and incompatible drivers can and do cause issues with Windows 7, often giving false error codes. Random stop codes often indicate hardware issues.
As a Priority:
PC Tools is known to be a cause of BSOD's on many Windows 7 systems. Uninstall PC Tools, including ThreatFire. Download Link Removed due to 404 Error as its replacement. Make sure your Windows firewall is switched on!...