I think my computer speed go down and olso my yahoo masanger i think i have a virus what i should do

i hane antivirus(avast)i update it but when i wanted to install it have an error and i also use macafee.and in my win.system whare are very files that enistall in anoyher time i herad these files maybe are virus and my task manager has been disable by my administator and i could enable it. what ishould do?tnx

I think my computer speed go down and olso my yahoo masanger i think i have a virus what i should do?pop up blocker

well first of all learn grammar and how to spell.

Thanks :)

I think my computer speed go down and olso my yahoo masanger i think i have a virus what i should do?systemworks

i think you should try to delete some of your files. i hope you know how to do that. cuz if your computer is too loaded with files, it'll slow down. it's call lagging
Try this computer speedup tool:

http://boost-pc-performance.info

It works very well.
try downloading windows defender .. its for free. or adaware Se .. its in google pack. you might have spyware. Try deleting temporary internet files. uninstall any peer2peer software in your computer.
Computers wear out over time, like a car does. Every once in awhile, you need to clean up. Defragment your hard disk, delete extra junk, and clear your RAM/Memory.

Then double-check with a virus check.
Check out http://www.pc-optimizer-pro.info