First, I am not an expert, so please don't suggest swapping out memory, etc.
I have a Dell desktop running Windows XP Pro, SP2. It works fine when I'm working on it, no lock ups. Then I'll go away and anywhere from an hour to a day I'll come back and find it locked up. Sometimes it is on the screensaver, and sometimes on the last screen I was using. I don't have any energy management options activated. Recently I changed the screensaver (to another Microsoft provided one), and it went for an entire week without locking up. I thought I had found success. Then boom, today, it locked up twice. The only things different is that months and months ago I upgraded to Norton Internet Security 2006, and the problem never occurred before that - however, I can't say how soon after the upgrade it started. I also installed a scanner, but I uninstalled it and still had the problem. Is there any way for me to find out what is causing the lock up? I have the Uniblue Suite and have run it, but no changes seem to make any difference. Thanks for your help.