CMOS and reboot the system. If problems continue, the hard drive itself might be defective. Try a known-good hard drive. If a known-good drive works as expected, your original drive is probably defective, and should be replaced. If a known-good
hard drive fails to operate, replace the drive controller board. Symptom 17-2. You see drive activity, but the computer will not boot from the hard drive Inmost cases, there is a drive failure,
boot-sector failure, or DOS/Windows file corruption. Check the signal cable first. Be sure that the drive’s signal interface cable is connected securely at both the drive and controller. If the cable is visibly worn or damaged, try anew one. You should check the CMOS setup next—see that all of the parameters entered for the drive are correct. Heads, cylinders, sectors per track, landing zone, and write precompensation must all correct. Otherwise, POST will not recognize the drive. If it has an option to “auto-detect” the drive, try that as well. The boot sector might also be defective. Boot from a floppy disk and try accessing the hard drive. If the hard drive is accessible, chances are that the boot files are missing or corrupt.
Try a utility, such as DrivePro’s Drive Boot Fixer or DISKFIX with PC Tools. You might also try running “FDISK /MBR,” which will rebuild the drive’s master boot record. Careful the FDISK /MBR command might render the files on your drive inaccessible. Finally, you might have a problem with your drive-system hardware. If you cannot access the hard drive, run a diagnostic such as Windsor Technologies PC Technician.
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