Hello. I'm trying to fix my friend's computer and I just have no idea what has gone wrong. She has a Celeron 1.3 GHz system with 128 MB RAM and 20 GB hard drive. I installed Windows XP on her computer 6 months ago. For the first 5 months, it ran great... no problems at all. But all of a sudden, it's slow as a turtle. The only thing I can think of that has happened is that we moved into a new place with a new internet connection (cable received through a router) and we installed a new HP all-in-one printer. Now you can't do anything on it without waiting a heck of a long time. Just clicking the start menu takes 5 seconds to appear. Clicking internet explorer takes like 30 seconds... And sometimes the system freezes altogether. The hard drive is not full, and does not need a defrag. It has all the windows updates (except it does NOT have any service packs) and Norton 2002 says there's no viruses. Any suggestions? THANKS!!