DMI tool needed

[manny1005]

I recently purchased an HP motherboard off Ebay and their is no serial number being detected. I was told by the seller to reach out to HP support for getting access to the DMI tool

[Paul_Tikkanen]

HP does not provide access to a DMI tool and different ones are used based on the age of the PC.

You will need to take the PC to an authorized HP PC repair shop and have the BIOS 'tattooed' with the system information.

HP® Service Center Locator - United States | HP® Support

[sbonomi]

Getting a reseller to tattoo a SN and device onto your MB may be difficult. All I talked to were doing paid business work only, and a walk in customer was below their notice. 

You can probably find a seller of replacement BIOS chips on Ebay and they seem to be functional to some extent. I put my project back on the shelf, so I cannot state complete sucess at this point.