Keyboard not working

On VAIO hardware diagnostics there no error

Good morning fansgirl-

I can only surmise that your friend did something with the fn keys that's causing the behavior such as starting the VAIO gallery.

If you go to Control Panel, Keyboard, is there an option for setting your keyboard to the defaults?

I was going to suggest that you download/install a driver from Sony but they no longer have drivers for your system. The only thing they have is updates for VAIO Care and VAIO Creations.

I did find a Synaptics touch pad driver here-

Sony VPCEA36FM Drivers Download for Windows 10, 8.1, 7, Vista, XP

If none of that helps, I suggest posting your problem at the following link-

Customer Community

I can't install the driver, it always got error mesage

What was the error?

Did you look in Control Panel?

This happen

Update:

When I tried power drain thing, my keyboard work again for about 30minutes then it not responding again

Try right clicking on one those synaptics driver updates and selecting run as administator.