Windows Malicious Software Removal Tool - MRT.EXE
To activate - press Winkey + X, click RUN, enter MRT.EXE, click OK.
Click YES on panel which shows.
MRT panel - click NEXT, click QUICK SCAN, click NEXT - program starts to scan.
Scan only takes about 3 minutes and covers around 14,000+ items.
If it finds a malicious file, it will delete it.
MRT is regularly updated with Windows update.