anytime I leave system running whether with programs up or not it freezes. I cannot use control /alt/delt to do any task manager stuff. only way out is to turn off power & re-power and sign on again. then syst works as long as you keep active.

Have you contacted HP for support and a solution to your problem, especially if your equipment is still under warranty ? If warranty is not an option, I suggest you visit HP forums to see if similar problems exist with the same model PC. Apart from the above, please confirm if your PC functions without a problem when you run your PC normally. This may indicate something is starting up when you do not move the mouse or use the keyboard for a prolonged time. I suggest you turn off automatic defrag and indexing that may start to run when PC is left idling. I also suggest updating drivers, including the chipset drivers, and installing SP1 and SP2 if not done so. Hope the above helps. Regards SuatCINI