Do a hard shut off of the computer by holding down the start button for 5 seconds. Then restart the computer.
Check power management options in Control Panel; adjust/change the settings there (Obviously, if you cannot get the monitor to display, use a different monitor)
------------------------------All things cometh to he that waiteth - provided he that waiteth, worketh like hell while he waiteth! Reply to Ubrales
The monitor is not in Safe Mode, the PC is. Exactly what is happening, when did it start? Anything happen before this? If a reboot does not fix this, you may need to at least do a Repair setup of Windows if not a full re-installaton.
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