Jak se to "nenačtení" projevuje? Hlásí to něco?
http://pc.poradna.net/question/view/209522-nejde-bo ot
http://pc.poradna.net/question/view/201407-pri-boot ovani-mi-to-pise-operating-system-not-found
http://pc.poradna.net/question/view/180015-pocitac- nebootuje-disk-boot-failure-insert-system-disk
http://pc.poradna.net/question/view/163140-ntldr-ne nalezen
http://pc.poradna.net/question/view/158911-nenabiha -win-xp