Guild Wars 2

So, today I was gonna start up my GW2 client, but nothing happened. I pressed it, my PC began loading, and then nothing.
I’ve tried a few things:
I’ve turned off my antivirus ( AVG )
I’ve turned off my firewall.
I’ve tried the useoldlauncher thing.
I’ve tried updating my graphics drivers.
Nothing worked.

When I try to uninstall the game through Control nothing happens, and if I try it again I get the message “please wait for the current program to uninstall/change.”
I’ve had no problem with GW2 in the past.

Anybody encountered the same problem?

GPU- HD Radeon 5770
CPU- AMD athlon 3.0 GHz X4

I’ll also add that the gw2.exe pops up in task manager on running process.