First try running your pc in safe mode to get to safe mode turn your pc on and immediatly hold down F8 key until you get to an options screen then select safe mode and you should have some sort of anti-virus software like nortons or mcafee or panda if you have anti-virus software disc try putting that in and start your pc from disc it should then check for viruses but you might have to change the boot sequance to do that.
If you have anti-virus software you need to keep it up to date
John
April 2005