Does the computer run better in Safe Mode?

How To Start In 'Safe Mode'

If you haven't already, then you might also use a friend or family member's computer to follow the instructions in the link below to download a couple of free antispyware tools, then copy them to a CD or flash drive, then transfer them to the problem machine:

http://forums.cnet.com/5208-6122_102-0.html?forumID=44&threadID=314027&messageID=2893942#2893942

And if you can run effectively in Safe Mode, try selecting "Safe Mode with Networking" a run an online scan at the link below:

F-Secure Online Scanner

Hope this helps.

Grif