The problems just started about two weeks ago.
When I press the power button on the monitor, it will come on anywhere from 30seconds to couple hours then it will turn off and be unresponsive. Sometimes just the screen turns off and the power button stays lit. Other times the whole monitor turns off. In both of these cases the monitor's power button is completely unresponsive and the only way to fix it is to unplug the power from the outlet and keep replugging it in until it works. When it does finally come back on, it just randomly shuts off like I said above. I've tried the monitor with 2 different computers and 2 different power cables and the result is always the same.
I called customer service twice and both times I got transferred multiple times and then finally told they can't help me because I didn't purchase it from dell.