Fix Missing Serial / Product Numbers for HP COMPAQ Laptops

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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, Modeland serial number are missing.. when i was google it found some links for solution

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