Computer is SLOW!!! PLZ HELP!?

My friend has a very slow computer. it takes 3 minutes to open a folder for example. Today i installed a couple top notch programs for adware/spyware/virus's. i scanned. it took all day for jus 4 scanns. it found stuff. i got deleted it. its still slow. any advice on what else to do?

Computer is SLOW!!! PLZ HELP!?computer protection

There are several primary reasons could cause your computer to be slow and also some softwares you can download to speed up it.

First,Corruption and Errors within your registry.The registry is a main part of your computer's Operating System. With time, as you use Windows and install and uninstall programs, your registry will get congested and full of errors. So your computer could slow down. So, if you can clean it up this problem can be solved.Sometimes you can speed computer up by 300%. To clean up registry,You can download a software called regsitry cleaner---Clean registry,remnant,corrupt files and temp files,history,cookies,etc.. This site:

http://speeduppc.info

lists top 5 registry cleaner,you can download and scan for free.

Second,Your computer is loaded with spyware/adware.spyware/adware hamper your computer's performance.It use system resources and slow your computer down.

So, to speed up your slow computer, use a registry cleaner software and clean your registry files first. It will make all the difference, and provide you with the immediate fix you need for your slow computer.Then,download a good anti-spyware to get rid of spyware/adware in your computer.