Follow these steps precisely to avoid permanently damaging the motherboard circuitry. Step 1: Disassemble the Laptop and Locate the Chip
The first step in fixing the problem is finding the exact firmware file for the ProBook 640 G2. HP packages BIOS updates into executable SoftPaq files (usually SPxxxxx.exe ), which contain the actual binary files that can be extracted manually. For the ProBook 640 G2, the BIOS family is identified as either or N87 , which refers to the motherboard revision. You can typically extract the BIN file by downloading the SoftPaq from the HP Support site, running the executable, and then locating the temporary folder where the extraction occurs. The extracted file will have a name like N76_xxxx.bin or N87_xxxx.bin , and this raw binary file is what you will use for recovery or programming. hp probook 640 g2 bios bin file fixed