najskor sa tam snazis dat XP, potrebujes vliezt do BIOSu a prepnut disk zo SATA rezimu na IDE aby ho naslo(pripadne ak je to jeden Acer tak treba update BIOSu, pohldaja na fore), alebo upravit instalacku XPcka, Vista by to nasla bez problemov, reklamovat nemas co podla vsetkeho
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