Game Guard Problem

Now I install gameguard personal 2007, that normally would fix any gameguard issue. I also check if i had any program running on background.
I was able to play 1 time without any problem. But the second time I enter the game it give me this problem again. now giving me a desertion cause i was able to enter in a game. I get this error print that you actually can see that i do not hack.

[img]http://xokako.****/erro.JPG[/img]

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Heres my Support ticket

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My Crossfire crashes while checking files. And I already try to uninstall, and doesn't solve. I try with the others CF versions and enter without any problem. this problem started when i changed my graphic card, from a MSI Radeon X1950 PRO 256mb to an Asus EN8800GTS 320MB

Dear Player;

Please try our common solutions for issues, which can be found at the following link:
http://forum.z8games.com/showthread.php?t=32
If you require further assistance, please post in our Tech Support forum or submit an additional support request.


Now i try it again, after a defragmentation and it was a faster checking file, and so I was able to log on, but soon after appeared me Gamehackdetected error and close CF.
And I don't hack. or even had any program turn on in backspace, not even physx from nvidia

Another complement:

I was able to play, with the new Graphic Card but the next day i wans't able anymore

Here's my PC specification:
CPU Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz;
RAM 2.9 GB;
OS Microsoft Windows XP Professional (Build Service Pack 32600);
Graphic Card Asus EN8800GTS 320MB;