If your HP 635 is still running, treat the BIOS with respect. One wrong setting or interrupted flash is all it takes to turn your laptop into a brick. But with this guide, you now possess the knowledge to update, configure, and troubleshoot the HP 635 BIOS like a professional technician.
Visit the HP 635 Software and Driver Downloads page . Enter your serial number or select your operating system to find the latest BIOS update file (usually an .exe file). hp 635 bios
While holding those keys, press the for 1–3 seconds, then release only the power button. If your HP 635 is still running, treat the BIOS with respect