I have dual monitors at my office. If I do not use the keyboard for more than a few mins, the left monitor goes to zero brightness. As soon as I hit any key on the keyboard, it goes back to the correct setting. I could be using the mouse the entire time and it still happens if keys are not used. It is not the monitors as they were recently replaced. It is not the power/energy saver settings because the monitor on the right does not do it. I have gotten no definitive answer from 3 separate IT people here. help? how do I make it stop doing this?