Dell N5110 No Keyboard and No USB 3.0 on right and rear

my friend gave me a DELL INSPIRON n5110.

It is working before but on the latter days, the KEYBOARD doesn't seems working showing no response even pressing CAPLOCKS nor any key.  Also, the USB 3.0 port in the right  is not working.  I tried inserting USB keyboard on the malfunctioning USB 3.0 right port. During boot up. the USB keyboard NUM lock lights ON once which showing there is a signal from this PORT.  However, after lighting ON, It wouldn't respond at all until the WIN7 loads up.

My suspicion is a hardware problem or grounded.

I appreciate any help.  

Thanks;