Re: HP Pavilion DV4-2120ca
Disassembled laptop to clean out the dust collection in fan area, and applied new therma paste heatsink area. Assembled laptop, and was RELIEVED and PLEASED laptop turned on.
Everything works, automatic wireless detection, able to get online, recognized wireless USB mouse attachment, mouse works.
BUT the keyboard doesn't work...
ACTION Taken:
1. As per one google search suggestion... Unplugged laptop, removed battery, pressed on start button for 30 seconds, inserted battery, plugged in laptop, restart. Keyboard still doesn't work.-- cannot type, tab button doesn't work, Ctrl,Alt, Delete doesn't work, escape doesn't work.....
2. Reviewed disassembly & assembly steps, keyboard cable is attached. everything seems to have been reconnected
NOTE:
There are 2 accounts on this laptop... administrator with password, and family member that does not require password. By using mouse I am able to use computer, but anything requiring keyboard like entering password for administrator account is not working.
ANy input greatly appreciated.
Thank you