Hello, try this first.
If needed use safe mode with Networking.
Download the FixTDSS.exe
Save the file to your Windows desktop.
Close all running programs.
If you are running Windows XP, turn off System Restore. How to turn off or turn on Windows XP System Restore
Double-click the FixTDSS.exe
file to start the removal tool.
to begin the process, and then allow the tool to run.
Restart the computer when prompted by the tool.
After the computer has started, the tool will inform you of the state of infection (make sure to let me know what it said
If you are running Windows XP, re-enable System Restore.