I have a 2 year old desktop which until last month was running just fine. Suddenly my Norton 360 would kep freezing, and in the end I did a fresh loading of windows 7 wiping everything. All was okay for a couple of days then Norton would not load then crash etc etc.
Gringo went though combifix etc finding nothing nasty.
All seemed well then bam, I could not boot up. After a few days I reloaded windows 7 again, avast, anti spyware, office 2010. The computer was fine for a couple of hours the failed to boot. Did a defragement and used the check disk tool. It found many "bad sectors"ran it again and seemed okay. I am no longer using Norton 360.
But now it is still running slow. All will be great for 20 seconds, then everything freezes for 5 seconds, the fine again then freezes!!!
It is doing my head in