Check the power cable or swap it with another for testing purposes,check the pc's power supply and make sure it is delivering power to the monitor, use a multimeter and set it to V voltage to do the testing.Also the power supply inside the monitor may be faulty or bad, power outtages can do that.
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Check the power cable or swap it with another for testing purposes,check the pc's power supply and make sure it is delivering power to the monitor, use a multimeter and set it to V voltage to do the testing.Also the power supply inside the monitor may be faulty or bad, power outtages can do that.