Owner's manual strana 136.

Musi z tych Vist byt funkcne aspon to menu po zmacknuti F8 (pri starte PC pred logom Win) a tam Advanced Boot Options -> Repair your computer -> Dell factory image restore.

P.S. ked uz z tych Vist nenabehne ani menu po F8, asi budes muset pouzit nejake CD/DVD aspon aby si sa dostal k tomu repair computer (mozno standardne Vistove alebo specialne dellove). Prip. ked F8 nejde tak skus aj F12 a vybrat dell diagnostics ci tam nieco neni.