Step1: Remove autorun.inf files from all your drives, include any usb/flash drives.
1. Manually:
Reboot your PC in Safe mode.
1. Restart your computer
2. After hearing your computer beep once during startup, but before the Windows icon appears, press F8.
3. Instead of Windows loading as normal, a menu should appear
4. Select the first option, to run Windows in Safe Mode.
Click Start -> Run.
In the type box enter cmd and press Enter.
In the command console type del /a:h /f c:\autorun.*
Repeat previous step to all drives, make replacing...