I've been having this this problem for some time and recently it has began to occur much more frequently. What will happen is that my computer will completely freeze. All input into the computer will become unresponsive. The mouse will freeze and not move, the clock will stop, and the computer will not respond when I press the power button. The only way to turn the system off is to hold down the power button.
I have already checked:
The power supply (replaced)
System drivers (updated)
Usb hub (removed)
I know this is a vague problem, but does anyone have any other ideas of what could be going on here? This used to happen maybe once a month or so, now it seems to happen everyday. Any help would be greatly appreciated, thanks allot