My computer is slowing down please help me?

i have an amd processor,512 mb, about half free on my 80 gig hd, when i scan for viruses or spyware non is detected,when i reboot nothing changes, wat else can be causing this? plz hlep me

My computer is slowing down please help me?internet security

go to smartcomputing.com

to find out ways to make computer faster

My computer is slowing down please help me?network security

A clean computer is key to a faster computer. Run the 3 scans below.

Update and run your Anti-Virus program. Don't have one? You can run a free online scan from CA.

http://www3.ca.com/securityadvisor/virus...

Download, update and run Spybot---http://www.safer-networking.org/ . Don't forget to use the Immunize feature.

Download, update and run Adaware---http://www.lavasoftusa.com/software/adaw...

Now lets clean up your registry.

Download RegScrubXP--http://www.majorgeeks.com/download.php?d...

Safely cleans junk out of the Windows 2000/XP system registry. All changes made to the registry are fully restorable to it's original condition. You can make an exclusion list of registry entries that RegScrubXP will not display as problems. You can sift through a list of file extensions, company names, run upon startup programs, Internet Explorer history, and uninstall programs to delete what you think is junk.