Freeze in armada mode

when it happens i always hear a repetitive sound and then i know that the pc its locked and the only thing i can do its restart the pc, usually happens when the countdown its in 00'00, but also happens sometimes when the game is loading. last days i was able to play most of the games but today it happened 4 times in a row.

I not play too much singleplayer but i think that this only happens in armada mode.


Windows 7
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 5600+ (2 CPUs), ~2.8GHz

Memory: 4096MB RAM

Card name: ATI Radeon X1950 GT
Driver Date/Size: 2/11/2010 07:12:10, 5205504 bytes

Description: Speakers (Realtek High Definition Audio)
Date and Size: 1/2/2007 22:42:32, 937256 bytes

[FocusTechSupport]

Please update the drivers of your REALTEK HD audio controller:

1. Click http://fichiers.touslesdrivers.com/3391 ... 7_R268.exe
2. Save Vista_Win7_R268.exe application file on the hard disk.
3. Once download done, run Vista_Win7_R268.exe and follow the instructions.

the problem is not solved after the update of the drivers

i tried some more things like reinstall the game, put the graphics down but nothing solved it.