So when i idle, or turn of the monitor, when i come back to the computer turn on the monitor, it wont work, the monitor turns on but it just go black screen, i have to press a button on my keyboard(sleep) to make my monitor work
Just sounds like your PC is going into sleep mode when you leave it, doesnt really sound like a fault. If you just change the power settings in windows it should stop (providing you disable sleep mode)
no it is not in sleep mode, it is turn of display mode,