Hi, i could be the CPU, but usually the either work or not.
personally i would reinstall teh OS first, what SP is it?
Also when you do a fresh install, make sure teh first thing you do is install the drivers in this order, chipset audio, video lan, anythiong else. Then do the windows updates, but i would suggest before doing teh updates seeing how the system is running. Also i would do the same with Norton, install it afetr the drivers, but also after youve seen how the system runs without it installed. Process of elimination and all!!"!
I reformatted my hard drive and followed your advice. I got better results than before, but the system is still not right. I get occasional screen freezes and it often won't shut down properly. Also, it has a problem with images. When I pick thumbnail view it just sits forever rather than rendering the thumbnails. I am wondering if there could be something in the BIOS settings that is causing the problem.