i have intel d875pbz motherboard ,bios is up to date, hard drive crashed and reformated as ntfs and got computer to work again but when i took boot disk out and restarted there is no hard disk showing ,so went to bios to see if it was there no luck ,no hard disk there, but if i put bootup disk in cd/dvd drive and restart computer there is the hard drive and system is working great take boot disk out and restart no hard drive found any body out there seen a problem like this before .