I just bought an Acer Notebook for play Guild Wars, but it gives me a problem.
When i launch the games, it opens the first window with the login and pass,
but after like 10 seconds, it gives me an error and it closes.
The error is this:

I've installed the last DirectX version, downloaded all the updates for Windws Vista and service pack, last Graphic Card Drivers, but it still doesen't works.
I tried to put the GW graphic at minumum but still nothing.
Offcourse, computer is not overclocked, cause it is new.
This is my Notebook computer:
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Notebook Acer Aspire 5720G
Processor Intel Core 2 Duo CPU T5250 @ 1,50GHZ
(1.5 GHz, 667 MHz FSB, 2MB L2 cache)
Nvidia GeForce 8400M-GS 256MB
RAM 2046 MB
Windows Vista 32 Bit
Monitor 15'', 1280x800
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Does someone please can tell me how can i fix that?
Thank you very very much!