Ther may be so many reasons it may be because of hardware or software:
Incorrect hard drive settings, System virus, Data corruption, Hard drive configuration, Bad Hard Drive Cable or even malfunctioning hard disk itself. Check this first whether to see your HDD Master boot record (MBR) is corrupted: Boot your system using a clean, uninfected bootable floppy. Use the chkdsk (check disk) DOS command to do a read only scan of the boot partition. It will tell you if the MBR is corrupted. If it is corrupted and there are no bad sectors, then you can safely go ahead and do a normal scan with the fix errors automatically switch. If there are bad sectors, then it is better to get your hardware supplier or service agent to fix the problem for a minor charge.
If the problem continues even after fixing the MBR, Try to do an auto-detect of the IDE drives in BIOS. Virtually all BIOSes now come with IDE device auto-detection. If it finds the drive after doing the auto-detect, save & exit and let it continue booting. Otherwise, there may be a problem with hard disk. Remove, examine and reseat the signal cable and power connections to the hard disk drive and to the system board, to ensure all connections are firm and proper. If the problem persists, Check if the drive is recognized by the BIOS in another working system. If not, the drive is defective and needs to be replaced.
Answered by
jaivir
, an ibibo Master,
at
10:20 AM on July 23, 2008