gpu scaling on win10 CS:GO

Computer Type: Laptop - HP ProBook 470 G2

GPU: Intel HD Graphics 4400 / AMD R5 M255

CPU: Intel® CoreTM i7 4510 @2.00 GHz (4 CPUs), ~2.6GHz

RAM: 8192MB RAM DDR3

Operating System & Version: Windows 10 Pro x64

GPU Drivers: AMD 17.6.2 - AMD Catalyst Software Suite 17.10.3211.1011 Crimson ReLive

Chipset Drivers: Intel Haswell-ULT

Motherboard: Hewlett-Packard 2249

Background Applications: Skype / Chrome ...

Description of Original Problem: If I go from 16:9 to 4:3 I have lateral black bars and Im trying to stretch it to full screen ( CS : GO )

Troubleshooting: I have already selected full panel display from my driver settings as you can see. I have even tried that app that changes your resolution from a set key but forgot it s name. I have also checked loads of topics and youtube videos but my settings are different from theirs and some are missing because Im on a laptop and have dual cards.I will add you some photos of my settings so you can see:

http://imgur.com/a/H3e5j http://imgur.com/a/54ey9 http://imgur.com/a/BDeq