so validate it... if ya OS is a genuine... nothing to worry about anything..
if not
take a backup...
first - system restore... & check the progress
if not u should go for a system recovery..
WIN VISTA Tiyenne Machan.....Man Meka Update off karala US kale... Licen Key ekak tiyenavanam Diyan... Ehema natnam Mata Me Error Eken Ain vela Vada karanna vidiyak nadda?