How to fix BlackScreen problem?

[iPrima]

Hello MPGHers.

I have problem with CF. Because when I join the game(room) it appears BlackScreen what reads about 1min(always). I don't using hack any hack tools. Please help me to fix that problem. (I wrote the same post at the Z8games.com but anyone answers.) Thank you.

System Information: (My computer)
------------------

Time of this report: 3/22/2012, 16:57:34
Machine name: THEQUER-PC
Operating System: Windows 7 Professional 32-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.111118-2330)
Language: Czech (Regional Setting: Czech)
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: GA-MA74GM-S2H
BIOS: Award Modular BIOS v6.00PG
Processor: AMD Athlon(tm) 64 X2 Dual Core Processor 4800+ (2 CPUs), ~2.5GHz
Memory: 2048MB RAM
Available OS Memory: 2046MB RAM
Page File: 940MB used, 3152MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode

[[MPGH]Hero]

Maybe you should go into your crossfire options, then change the resolution. Play around it for a bit.