Pujc si instalacku od kamose.
Instalacka umi instalaci opravit.
EDIT
tady to vsecko je
anglicky i cesky
http://www.ehow.com/how_4836283_repair-mbr-windows .html
http://translate.google.cz/translate?sl=en&tl=cs&j s=n&prev=_t&hl=cs&ie=UTF-8&layout=2&eotf=1&u=http% 3A%2F%2Fwww.ehow.com%2Fhow_4836283_repair-mbr-wind ows.html&act=url