How To 

How to fix Default Boot Device Missing or Boot Failed.

Hi guys today I am gonna discuss about a common problem in laptop that is Default Boot Device Missing or Boot Failed
This Error usually occurs when
1. Boot Sequence or Boot Order is incorrect.
2. Bios Settings are incorrect.
3. Hard Drive Failure.

Solution
1. Check boot Sequence if hard disk is on second priority make it first.
2. If Boot Sequence is not showing up Select legacy bios mode and try to install windows, and then again select UEFI bios mode, and check Boot Sequence.
3. Try to reset Bios.
4. If still hard disk is not recognized then remove the hard disk, clean it and insert it again.
5 If still hard disk not recognized then format hard disk by IDE to USB converter.
6. If still it is not shown then probably your hard disk is corrupted or damaged. Go and Buy new one. Better to got checked your laptop from professional technician first before you buy new hard disk.
P.S: I am not responsible for any other damage or data loss. I tried these and I Fixed the error.
;)