I'm using the yoga 2 pro i7 and I've had trouble with blue tooth recently so I tried updating the driver from the lenovo website. I close my laptop to go out for the weekend and come back to my laptop showing a blue screen saying kmode_exception_not_handled and the computer constantly restarts itself. It goes to the lenovo screen like it's about to start up then shows an error at 3% then goes to the blue screen again, which keeps offering to restart the computer. I don't have a chance to go to safe mode option or do anything, it's just a constant loop. I tried pressing f8 and fn +f8 on start up but nothing helps. How do I get out of this loop so I can fix the problem???