CONNECT TO SYMANTEC.COM, USE THIRE ONLINE CHECK FUNCTION, CHECK TEH VIRUS AND SPYWARE. AFTER IT FINISH, IT WILL SHOW THE RESULT(HOW MANY THEY FOUND) BUT THE SYMANTEC DON'T CLEAN FOR YOU. YOU NEED TO MARK DOWN ALL THE VIRUS FILE NAME AND LOCATION. AND THEN BOOT FROM A CD( WHATEVER WINPE OR EDR,REMENBER DON'T BOOT YOU OWNHARD) AND DELETE ALL THE FILES THAT SYMANTEC FOUND FOR YOU.AND DO THE REGEDIT TO CLEAN ALL THE REG.
HOPE THIS CAN HELP! GOOD LUCK!