Steam Download While Playing Game

Game

According to the AMD website I had to update my MB Bios:
http://support.amd.com/en-us/kb-articles/Pages/STEAMGamesonAMDFXplatforms.aspx
So I updated the Bios(1801) according to the official website:
http://support.asus.com/Download.aspx?SLanguage=en&m=M5A78L-M%2fUSB3&p=1&s=24
So finnaly I opened Counter Strike GO... and my computer decided to take some vacations to Florida again(the screen went black and the mouse/keyboard stopped working). It stills freezes, and I still had to restart the computer.
Specs:
OS: Windows 7 Ultimate 64-bit SP1
CPU: AMD FX-8320 3,5 Ghz
RAM: 8GB(2x4) Corsair Vengeance DDR3 1600MHz
Motherboard: ASUS M5A78L-M/USB3
GPU: NVIDIA GeForce 8600 GTS (Using it untill i get a R9 280x)
Storage: 250GB Seagate SATA 7200rpm
PSU: XFX Pro Core Edition 550w
Please Help, I have been using this forum for all the pc compatibility problems, i5 vs fx, nvidia vs radeon etc

Unturned For Free No Steam

Feb 3, 2015 - After you have installed the Steam Client, created a Steam account and logged into it, you can then activate your games.