You can scan your PC for viruses using Dr.Web Scanner component (you need to update anti-virus bases before you start). To start update, right-click the Dr.Web icon in the notification area and in the next menu select Update–>Update now.
Then run the scanner. Right-click the Dr.Web icon in the notification area and in the next menu select Scanner. Wait for the quick scan to complete, set the switch into the “Full scan” position and press Start scan.