System: Vista Business OEM pre-instaled on my laptop. I have a recovery files on my external HDD (whole system). In help file to it says to press F8 while booting, select "Repair computer" and follow instructons ... On my advanced startup menu THERE IS NOT such option !!! What now? My systm bacup is useless?. I don't have full Vista instalation disk, just Recovery CD of pre installed system which allows only to recover to factory installed system.