not sure what to check for first thats causeing the issue . trying to repair a Dell optiplex gx 280 / win xp . upon powering up have an amber light in front constant . fan is running at the sound of a jet engine . have no video indicator( monitor picture) . no beep code's , or any way of running a diagnostic . upon haveing first issue , i removed the hdd and using another pc ( and programs) managed to save personnel file's. So the hdd can be reformatted if need be . quess my question being would i have just a programming issue ( bios , boot, ect ) . and would reformatting , and use a linux base operating system help .