PROB : HP SERIAL NUMBER NOT FOUND AFTER FLASHING OR CHANGING THE MOTHERBOARD
2.Insert a USB memory stick (make sure it does not contain required data as it will be cleared) and run the rufus_v1.2.0.exe program.
3.Make sure the correct memory stick is selected under the Device heading
4.Make sure Quick Format and Create a bootable disk using: are ticked and select MS-DOS from the drop down menu to the right.
5.Click on Start, acknowledge the warning and click on OK.
6.Close Rufus by clicking the cross in the top right corner of the window.
7.EXTRACT ALL FILES FROM HPDU.RAR TO PENDRIVE
8.NOW BOOT FROM USB, DOS PROGRAMME WILL OPEN
9.TYPE nbdmifit.bat and press enter.
FOR SOFTWARE DOWNLOAD THE RAR FILE BELOW