Problem:touchpad is not working after change the motherboard.defaulting 840 g1 motherboard at kit.now replace 840 G2 motherboard.its suitable with kit.but touchpad subboardconnector(fingerprint board) is differ.its 40 pin connector.old is 20 pin connector.remove and attach new connector.connecting cable via touchpad.its working properly
Hp 840 G1 Subboard not working:
problem:daughterboard (usb port,vga port) not function and also no vision,while connecting strip.if disconnect.visualing .doubt to replace subboard .visioning and working well.