for serious i know one evetrmly molishous virus called itch.exe it changes your wallpaper to the korn logo but not kiss
run a virus scan because im pretty shure this cold be a virus but be shure your virus scanner is updated
also when you get the updeates dont retart because like itch the mabe so virus could take off jpg mp3 or even exe files off your comp, restart later (the virus scanner will be in full effect, it just needs to change the startup/redgestry on your comp).