Method One, the computer restart, and then into the boot state while holding down the F8 key, into the boot menu, now select the "use Last Known Good Configuration" option to enter the system to see if the fault has been resolved.
Method Two, the same computer boot hold F8 key, but we choose to go to "safe mode", and then click "Start-run", and then enter "Msconfig" on the run, open the System Configuration window, switch to "Start" on the window, put some necessary boot program to remove, Then, under Reboot, see if the failure is resolved. or select diagnostic boot-load only under general. Basic device drivers and services, and then reboot the computer, and it will start normally. As shown in the figure:
About the computer black screen only mouse can move how to solve the small set of solutions introduced here, to remind users to see your C system disk is full, C disk full is also cause system failure, the proposal to clean up in time.