My notebook model is HP PROBOOK 640 G1
I Downloaded hp system image manager about a year ago. I extracted it and accidently opened thunderboltfirmware.exe after opening it it showed cmd-like window and some text in it. after 3 days, my touchpad buttons didn't worked correctly. then after 2 weeks. my laptop didn't startup. it was completely dead. i give it to IT professional, but he couldn't solved it. then, i removed the battery and don't used it about a month. then i am able power on it.
but, the touchpad issue wasn't solved. then shift[both], alt[both], ctrl[both] and fn key stopped working. Now i am using the laptop with a mouse and a help of On-Screen Keyboard Software.
PLEASE HELP ME.