Guild Wars 2

Hey guys
i bought the game yesterday and i installed it and played
But once an a while the game crashes and i see a black screen but i can use my mouse, but i dont understand cuz my systemrequirements are far over it

CPU
Minimum: Intel Core 2 Duo 2.0 GHz, Core i3, AMD Athlon 64 X2 or better
You Have: AMD Athlon™ 64 X2 Dual Core Processor 4400+
Click here for the latest CPU drivers.

CPU Speed
Minimum: Info
You Have: 2.3 GHz

RAM
Minimum: 2 GB
You Have: 4.1 GB

OS
Minimum: Windows XP Service Pack 2 or better
You Have: Microsoft Windows 7 Ultimate Edition Service Pack 1 (build 7601), 64-bit
Click here for the latest Windows drivers.

Video Card
Features: Minimum attributes of your Video Card
Required You Have
Pixel Shader version 3.0 4.1
Vertex Shader version 3.0 4.1
Dedicated Video RAM 256 MB 512 MB

Sound Card
Minimum: Yes
You Have: ATI HDMI Audio
Click here for the latest Sound Card drivers.

Free Disk Space
Minimum: 25 GB
You Have: 30.0 GB
(My results from systemrequirementslab)
So can someone pls help me to fix this

like this? http://www.youtube.com/watch?v=obrfWLkr8Pc
yea, I have the problem since halloween:)