Tried reinstalling xp from both the recovery partition and dvds. Install seems to freeze at inital setup. Modification to system include upgrade of ram to 1gb stick and upgrade of hhd. New hhd is a clone of the old one, removed it and tried again with original hhd; with the same problem. Will remove new ram to see if that's the problem. Any suggestion will be grateful. Additional this unit is a refrub only $100