it all started when i got a problem with the 50 gb harddrive i went to start up and the comp had a file missing so i couldnt load it so i connected my 13 gb hard drive i keep it as a spare and diconnected my 160gb harddrive and plugged in the 50gb one and wiped it it was fine went to copy my xp form the 13 gb to the 50 and it coppied and still wouldnt load so i wiped it snd tried installing xp on it and its says its corupt and you cant format it