Note the exact offset block address where the DMI data resides.
Before resorting to a programmer, you can try HP's built-in emergency recovery: Download the latest BIOS from the HP Support site. Run the file and select "Create Recovery USB flash drive." Plug this USB into the broken laptop. Press and hold Windows + B while pressing the Power button. Where to Find "Fixed" BIOS Files
Never skip this step. Even a corrupted BIOS contains your unique system data.
Use a tool like version 11 (for Skylake). Load the downloaded fixed BIN file. hp probook 640 g2 bios bin file fixed
: The computer turns on, and you hear the fan, but the screen remains blank.
When standard recovery methods fail, the only solution is to re-flash the BIOS chip directly using a programmer. This process requires a specialized to work correctly.
Connect your programmer to the chip using the SOIC8 clip or by desoldering the chip onto a breakout board. Open your programming software (e.g., NeoProgrammer). Note the exact offset block address where the
Summary
Power lights turn on, but the screen stays entirely blank.
Before attempting to flash a hardware BIOS, you must verify the exact hardware profile of your motherboard. The HP ProBook 640 G2 typically features the following configuration: Press and hold Windows + B while pressing the Power button
Are you trying to or fix a "no power" issue ? Do you already have a CH341A programmer or similar tool?
If you have already flashed your BIOS and the laptop still won't turn on, you may have a hardware issue (e.g., KBC chip or power rail issue). If you want, I can: Tell you where to find the KBC chip List common components to check for shorts Suggest tools for finding motherboard schematics
If the hard drive partition is corrupted, you can flash the .bin file via USB: On a working PC, run the official HP BIOS update tool. Select .