Same deal as any virus/spyware. First, if you don't have them, download AVG, Adaware SE, and Spybot Search & Destroy and update them. Then, restart your computer and press F8 while it boots up until it gives you a menu. Start Windows in Safe Mode.
Run all the tools in safe mode and remove everything they find. You have to restart again in safe mode and re-run the tools to get everything. If that doesn't work, find out what files are causing the problem and delete them. If they resist deletion, google ways to delete stubborn files.
Run Msconfig Cleanup after you unchecked the items you were told to uncheck and recheck, click "Select All", then click "Clean up Selected", then click "Quit". Make sure your antivirus and firewall are not checked.
Now run each Spyware program 1 by 1. Running all 3 at the same time will slow most systems down.
When each program has finished scanning, remove everything.
Now go to the recycle bin and delete everything that is in it.
Then run CCleaner Â„Â² make sure you run the Cleaner section of Windows and Applications and then the Registry Cleaner. Make a backup if you wish while running the Registry Cleaner when it asks you.
When finished with the scans, reboot, and go into Safe Mode and run these scans again, remove everything they find, and then reboot back into Windows in normal mode.
Then run HiJackthis!
Save the log, copy and paste the log on www.techist.com
Do not attach the log, copy and paste always. This will make things go much faster.