If not unplug it and remove the battery and do whatever else is required to clear the BIOS as per the instructions on the HP Web Site then undo what you've done replace the Battery and Mains Adaptor Power Up and when you get the error screen enter BIOS and set the Date & Time at the very least. Save the changes exit BIOS and then reboot.
If you still do not get what you need enter BIOS again and change the settings to what you need rather than the Default Settings and then save the changes as you exit BIOS and let her go. You should then have what you want. If not and you did get the BIOS Update from HP you'll need to ring HP for a solution to the problem if one exists.
Col

How to Find the Model Number of an HP Laptop. This wikiHow teaches you how to find the model number of your HP laptop. You can use this number to specifically identify your device to people attempting to service it, or to ensure that a.

Maybe I did flash the wrong version of my BIOS.
Now, the serial number and model number are empty. However, by default, we can not change these fields.
Is there any change to modify these fields because BIOS has some changeable and unchangeable fields by factory settings?
TKS

When you flash any BIOS you are offered the option of saving the old one did you do this? If you did you can run the BIOS Flashing utility and replace the old BIOS Version. If you didn't do this I would suggest that you call HP for a fix.
Col

You will need to find someone with access to HP utilities such as a certified service provider. The utility for setting model and serial number used to be called snzero and was used to set these after the motherboard was replaced.

Were you able to find a utility for this? I am looking for it as well.

Hi - try here for utility for reset of serial number - is for deskpro
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=0&prodSeriesId=96302&prodNameId=97131&swItem=PSG_I14992-36908&swEnvOid=14&swLang=8&taskId=135&mode=3

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lol first thing is you go to ypur panel find it or digran it

there is no way to hack the hp bios setting you have to do this by recover the hp password

If you watch the configuration panel, you will see the COM port coming OK, but then switch off because of error 10. Download terminal for windows 7 64-bit. But, as soon as you plug the device on USB port, you W10 will revert to the latest version (3.6). It don't care, because the old version is now available in the list, and you can proceed as mentioned above.

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