How To Open A Macbook Pro 2015. 154 or 17-inch LED-backlit widescreen glossy display 1610. Thank you very much.

After reading positive reviews about the open box options available at Best Buy I decided to take my chances and order that. Everything is working but the touchapad can only left click and the function keys can only F1-F12 not brightnes of LCD and keys sound etc Could you please help me with this. Kit includes all tools needed.
The MacBook Pro Core i5 27 13-Inch Early 2015 Retina Display features a 14 nm Broadwell 27 GHz Intel Core i5 processor 5257U with dual independent processor cores on a single silicon chip a 3 MB shared level 3 cache 8 GB of onboard 1866 MHz LPDDR3 SDRAM which could be upgraded to 16 GB at the time of purchase but cannot be.
The MacBook Pro Core i5 27 13-Inch Early 2015 Retina Display features a 14 nm Broadwell 27 GHz Intel Core i5 processor 5257U with dual independent processor cores on a single silicon chip a 3 MB shared level 3 cache 8 GB of onboard 1866 MHz LPDDR3 SDRAM which could be upgraded to 16 GB at the time of purchase but cannot be. Everything is working but the touchapad can only left click and the function keys can only F1-F12 not brightnes of LCD and keys sound etc Could you please help me with this. Check out their specs and price in the Philippines below. First check to see which 15-inch MacBook Pro you have.
