Ola, I just bought a new pc from tigerdirect, and if I leave the machine on and come back to it the next day, I move the mouse/keyboard and nothing happens, the pc is still on, but I can't get the screen/pc to respond and I need to hold the power button in for 5 seconds and reboot. If I leave the pc on and come back a few hours later and move the mouse/keyboard it comes out of "Sleep" mode and no problem; the problem seems to occur after 24 hours or so. I don't think I have any malware/spyware/virus's according to programs I have downloaded. Any suggestions or help would be appreciated, thanks so much!