My Hp monitor has been going to sleep when it shouldn't be. I can be in mid click and the status window in the middle of the screen pops up and tells me there is no input signal then it goes to sleep. The monitor will not turn back on unless I reboot the computer. Up until the other day the computer would turn back on, now it just beeps at me. It gives a series of beeps. Two single beeps than One long beep, it does this 9 times then nothing. The people at hp had me pull my ram cards out one at a time and start the computer but still it beeps.