I was playing a game and I don't know if I pushed a wrong combination of keys or what but my monitor went to sleep. Now it won't wake up. The monitor is fairly new and the tower recent wiped and the OS re-installed. There haven't been any issues since the re-build and we even installed a new fan. I can't seem to wake the monitor up. I push the source button and it comes on and says ANALOG POWER SAVING MODE and goes back to what it was doing. How can I fix this and what have I done wrong? As I said before the monitor has had fairly low usage since its purchase.