I was building boxes for some friends and I bought some off ebay supposedly with a DVD read defect. which didnt matter to me since I was replaing the dvd drive and original hd with 2 new hd. 2 of them I was able to load using a different drive 2 of them wont boot they hang on startup immediately any ideas.. is that a flash maybe gone bad? or is that what they do with a hd mismatch?

i have another which boots to the ms dash then says your xbox requires service.. anyone have any ideas. the ebayer that sold me them wont exchange or swap them for anything..
anyone got any ideas?