Ok this is starting to get really annoying. I do not understand why my computer is so slow. I have used Disk Clean Up and Disk Defragmenter after it was done scanning my computer it was still slow. I have used some programs to get rid of unnecessary files. The free programs I have used are Ccleaner and Glary Utilities it scanned my whole computer and it was still slow. Then I bought 2 programs that are called Registry Booster and Registry Fix 7, and these are not freeware, I scanned my whole computer and it was still slow. So then I started to suspect I had a virus, so I went out to buy ann anti-virus, it was called Avast Internet Security 2009. I had many viruses so then Avast took care of every single virus. But still my computer is slow what could possibly be the problem? I have many programs installed on my computer, and it was working fine and it was fast, then at some point my computer got slow, can someone PLEASE PLEASE HELP ME!