https://www.youtube.com/watch?v=7N_JtKVP...

Insert clean USB flash drive.

Then run USB Image tool.

Choose the flash drive then click on RESTORE and choose the .img file.

After restore remove flash drive.

Insert flash drive into locked laptop and boot.”If HDD is installed remove before booting.”

At C:\OUTPUT type CD.. “Then hit enter”

Type HPBR “Then hit enter”

First thing is to save your settings.

Select #3 re-program.

Press “S” to save system information.

Type HPBR and hit enter.

Since your model is not listed select “SHOTGUN.”

After reboot repeat “SHOTGUN” a second time.