Answer :

Final answer:

To fix the 'default boot device missing' or 'boot failure' error, check the boot order in BIOS, disconnect external storage devices, check the connections, and use system recovery options to repair the boot files.

Explanation:

To fix the 'default boot device missing' or 'boot failure' error, you can try the following steps:

  1. Check the boot order in the BIOS settings and ensure that the correct boot device is selected.
  2. Disconnect any external storage devices or disks from the computer.
  3. Check the hard drive or SSD connections to make sure they are properly connected.
  4. Use a bootable USB or DVD to boot into the system recovery options and repair the boot files.

If these steps do not fix the issue, it may be a sign of a hardware failure or a more complex software problem. In such cases, it is recommended to seek help from a professional technician or the manufacturer's support team.

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