Whenever I use windows, and I either close the lid, or leave the computer on without using it, it tries to go into standby mode, but whenever that happens, it freezes and I have to hold down the power button to restart it. I have xp with sp3 and everything is up to date. I already turned off standby mode when I close the lid, but if the computer stays on for longer than say 20 minutes without someone using it, it goes into standby mode automatically.