About 2 months ago i installed a 250 gb ide hardrive into my Dell Optiplex 280, P4 2.0 1 gb ram. All was fine until about 5 days ago when i woke up to find this PC at the blue XP screen shutting down( not the blue screen of death blue sreeen). I let the PC shut down completely as it was on overnight. Iwaited for a few minutes and restarted the PC but it would not see the harddrive all I got was a blinking cursor at the upper left hand of the screen. I made several attempts to reboot through out the day but still got the same thing, a blinking cursor. Just for fun I took the hard rive out of that tower put in into another Dell Otiplex and what to my wondering eyes did appear it booted to the hard drive. I took another hard drive an 80 gb, from yet still another PC and put it into the first Dell Optiplex 280 and it booted right up!!!! So to summerize the Dell Optiplex 280 P4 2.0 will read other hard drives except the 250 gb hd. And the other dell PC will read the 250 gb hd just fine???!!! Why wont the PC Dell see my 250. I can go into the bios and see it recognized but no boot, *censored*??!! Wha happen??!! I was told that maybe the Optiplex 280's bios cant read such a large Hard drive,,,but it had been for a few months now. did it suddenly remember" Hey wait a minute i cant read a 250gd hd...get it out of me" Help me........