The only way I can clear this is if I unplug the unit for at least 24 or more hours, then start it up. It will start up like normal, and then do the same thing, no longer than 15 minutes tops into it being booted. I put in a new power supply, and that didn't help, same symptoms. I don't recall adding any new software or hardware. I did try to do a restore, it took me through the process, and then said it could not restore to an earlier time.
I have booted it in safe mode, removed some programs I haven't used in awhile, and while still in safe mode tried to defrag. It took me to 9%, then froze again in safe mode.
This morning, after having it unplugged, it booted up like normal, and less than ten minutes later just froze. I had the processes window up, but it didn't show anything making it run at full tilt, so I am at a complete loss on what may be happening. The most unusual part of it all, is having to "unplug" the unit completely for 24 hours before it will start up again so the monitor and the keyboard will work. The fans "seem" okay, but this whole unplugging thing has me puzzled. Anyone hear of this before? THANKS FOR ANY HELP YOU CAN GIVE!!!
Oh, it has always had Symantec, behind a firewall, on a wireless router. It's an older unit, Dell Dimension 4400, but I have always kept it clean and (knock on wood) hopefully from any virus or harms way...