Fix Missing Serial / Product Numbers for HP COMPAQ Laptops

How to Fix HP “System Board 00A” or “Missing System Information” or “Product Information Not Valid” After update the bios, I went to the HP download center and updated the bios for my Compaq Presario CQ42 The update seemed to go fine, but now the product number, Model#, and serial number are missing.. when i was google it found some links for solution http://www.badcaps.net/forum/showthread.php?t=43958&highlight=NbDmiFit