i’m working on a dell optiplex gx240 which recently had a hard drive failure how ever i was attempting to format the disk when there was a power interuption and the system did not get past the dell screen when restarted followed by beeps when attempting to press keys on the key board please explain whats the problem and what should i do i already ordered ram up grade and a 120 gig hard drive acording to comments about max capacity for this computer on this site .