I just recently moved...and when I hooked up my PC it wouldnt boot to windows. I reinstalled windows xp pro. Now whenever I dont move the mouse for about 45 seconds the monitor or computer seems to go into sleep mode by itself. I have all power options set to "never turn off". Weird thing is, is that when this happens it seems to stop any download or kill the net connection when it stays in this sleep mode for more than a couple minutes. Simply moving the mouse will turn the monitor back on, and the net connection is then fine. This has never happened before. Again this is a fresh install of windows, same disk I've always used, same PC. No new hardware or software. I've checked all the hardware connections, everything is seated well. Also when this happens I get some very strange feedback through my speakers, when the monitor comes back on the screeching noise stops. Any suggestions?

Check the sleep setting IN THE MONITOR. Some monitors also have auto-turn off settings.

Now it sounds like a computer problem, like the CPU is stopping for some reason. Again, look for a sleep program of some kind (maybe a virus). Also it might be that the BIOS battery (if the computer has one) or the BIOS CMOS RAM failed.

I just recently moved...and when I hooked up my PC it wouldnt boot to windows. I reinstalled windows xp pro. Now whenever I dont move the mouse for about 45 seconds the monitor or computer seems to go into sleep mode by itself. I have all power options set to "never turn off". Weird thing is, is that when this happens it seems to stop any download or kill the net connection when it stays in this sleep mode for more than a couple minutes. Simply moving the mouse will turn the monitor back on, and the net connection is then fine. This has never happened before. Again this is a fresh install of windows, same disk I've always used, same PC. No new hardware or software. I've checked all the hardware connections, everything is seated well. Also when this happens I get some very strange feedback through my speakers, when the monitor comes back on the screeching noise stops. Any suggestions?