GW2 wont install
Try right clicking the Guild Wars 2 icon (depending upon if it asked you where to install and it created a desktop icon) and click run as administrator and see if this will allow you.
Also make sure Guild Wars 2 Game Client is added to your windows firewall allowed programs list.
You can also try deleting the local.dat file if it has of course created one during the installation procedure.
To do so open up Run via WinKey+R or simply clicking your start button → typing run > hit enter and then copy and paste in the following line
C:\Users\%username%\AppData\Roaming\Guild Wars 2
and hit enter, a folder will pop up and you will see local.dat file just delete this file and try to re run GW2.
ASRock H77M – Intel i5-3470 – G.Skill 8GB 1600MHz – HiS Radeon HD 7850 2GB
ok it still doesnt work