Everytime I turn on my computer, this screen pops up:

Press <F8> for BBS POPUP
DDR Frequency 400 Mhz, Dual-Channel, Tiled Mode
Checking NVRAM..
504 OK

Auto-Detecting Pri Master..IDE Hard Disk
Auto-Detecting Sec Master..ATAPI CD-ROM
Auto-Detecting Sec Master..ATAPI CD-ROM
Pri Master: YAR41BWO Maxtor 6Y160P0
Ultra DMA Mode-5, S.M.A.R.T. Capable and Status BAD
Sec Master: 1.10 PIONEER DVD-RW DVR-107D
Ultra DMA Mode-2
Sec Slave : B400 SAMSUNG CD-ROM SC-148A
Ultra DMA Mode-2
Auto Detecting USB Mass Storage Decives ..
00 USB mass storage devices found and configured.

Pri Master Hard Disk:S.M.A.R.T. Status BAD, Backup and Replace
Press F2 to Resume



When I press F8 or F2, nothing happens. It just stays on that screen. I can't do anything other than turn it off. I can't go to BIOS either. I pressed all the other F Keys before and after that screen pops up. Does anyone know the problem?

your hard drive is failing or already dead.
As you have access to another PC, find and download the diagnostics software from the makers website (maxtor is now seagate) http://download.seagate.com/seatools/registration.nsf/eula/desktop
this will confirm if I am right! Do not keep trying to access the drive as it usually makes it worse and limits the chances of data recovery.
Hope you have a backup -