How to fix disk boot failure

Updated: 01/24/2018 by Computer Hope

Boot options are not set properly in CMOS

Verify that the boot options within CMOS setup are set properly. Below is an example of how we recommend the boot options be set.

  1. Floppy drive
  2. CD-ROM drive
  3. Hard Drive
  4. Other/Network

Non-bootable floppy diskette or disc or USB in computer

Verify that there is no floppy diskette or disc in the computer. If the boot options are set improperly, the computer could be trying to boot from the disc drive instead of the hard drive.

Also, verify there is no disc in the computer and make sure that no USB jump drive, external hard drive, or memory stick is inside any memory card reader.

If you want to boot from a floppy, CD, DVD, or USB drive and get a disk boot failure and have verified the CMOS settings are correct the diskette or disc is either bad or missing boot files.

Remove added hardware and check connections

If you've recently installed any new hardware, it's suggested that it be removed to verify it's not causing this issue. If after the device is removed the computer works and it was another IDE/EIDE device ensure that the jumpers are properly set on the hard drive.

Also, if you've recently moved the computer or installed anything inside the computer that the connections for the drive be checked. Usually, it's best to disconnect the cables from the back of the drive and reconnect them to make sure they're connected properly. While inside also disconnect and reconnect the cable connected to the motherboard as well. While inside your computer make sure you're aware of ESD.

Bad hard drive

Computer hard drive

If you have followed the above steps and you continue to experience the same issue, unfortunately it is likely that the hard drive is bad or the controller is bad.

If available, you may want to connect another known good hard drive to the computer to determine if it can be detected. If it is detected then replace your hard drive. If it is not detected, unfortunately you need to replace the motherboard or controller as it is bad.

If no additional hard drive is available, it is recommended that the hard drive be replaced first or that the computer be serviced or repaired.

Additional information