I recently purchased a new desktop, HP Pavilion, Win 7 Home Premium, quad core, 64 bit, 8GB RAM. Everything works great but at least three times over the past three weeks after being idle for a long period I have no desktop activity. The mouse moves around but thats it eventually forcing me to do a hard shut down. I have the monitor sleep set to never and hibernate set to never, I just turn my monitors off when I'm away. Any thoughts or suggestions?