Fixing this issue requires rewriting the motherboard's EEPROM chip using a clean, verified BIOS .bin file. This guide provides the complete technical walkthrough to locate, prepare, and flash a fixed BIOS binary file onto an HP ProBook 640 G2.
To fix this, use to inject a "Clean ME Region" into your target binary file. Merge the working BIOS region from a donor file with the clean ME region configured for the Skylake chipset. Injecting DMI Data (Unique Device Information)
Anatomy of the BIOS image (BIN) used by HP
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Optional but recommended. Check your specific motherboard schematic; while most 640 G2 chips are 3.3V, some variations use 1.8V chips.
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