Finally, Leo ran into one stubborn error: “This installation package is not supported by this processor type.” It was the driver. The HP site offered version 11, but the old Celeron needed version 9. Leo found it buried in HP’s “previous releases” dropdown menu.
One last reboot. Wi-Fi bars appeared. The touchpad glided. The fan, once roaring, settled into a quiet hum.
But one driver was missing: the . HP’s site only listed the basic Intel one. Leo frowned, then remembered the second rule: Check the hardware ID .