Run an scan using your up-to-date antivirus program or run a scan using online scanner:
You might want to run anti-spyware programs:
Go to http://www.bleepingcomputer.com/forums/tutorial48.html on how to use Ad-Aware SE to remove Spyware & Hijackers from Your Computer
Also go to http://www.bleepingcomputer.com/forums/tutorial43.html on how to use Spybot - Search & Destroy to remove Spyware from Your Computer
I just added an 80 GB harddrive to my pc but it's still running a little slow. It also shutdowns my internet page after a few minutes,could I have a virus?