Hello Experts. I have a Lenovo desktop with 2GB Ram and 120GB Hard drive. I have been running Windows 7 on it without any problems for about two months. Suddenly from yesterday it just freezes after a random period of inactivity. I have diabled harddrive shut down and sleep mode but it still freezes. When it freezes both mouse and keyboard are unresponsive. The only hard ware change i have made recently is replace the busted IDE dvd writr with a SATA one.
I have AVG 9 running with current updates. Any ideas?