It is risky to leave your computer equipment plugged in. It should be completely disconnected from the power supply. This includes all hardware associated with your computer, such as audio speakers, modems, doves, terminals, monitors, etc.
Listed below are several helpful tips on protecting your equipment:
PC AND MONITOR [follow proper procedures in shutting down your PC software such as exiting Windows, getting to the c: prompt, then]
Turn off your PC and monitor