Hello,
I clean my laptop keys and after putting it back they are not working except for the fn key and the cap light is also working
i got the same problem with u before this..after i formatted back my laptop, the shortcut key on keyboard don't function except for the Fn+Brightness key..now, it can be used again..u just need to install back the driver..it's given in a cd/dvd..u supposed to get the cd/dvd driver when u bought ur laptop..if u don't have the driver cd/dvd, i've heard before that u have to download it..