the Game just start in black sceen

[nightblade]

when i start the it just black sceen, mouse and sound, can some one help me please

here my hardware, run on win7 ultimate


System
Modell : GigaByte GA-990FXA-UD5
Gehäuse : GigaByte Desktop
Mainboard : GigaByte GA-990FXA-UD5
System BIOS : Award (OEM) F12 10/03/2013
Gesamtspeicher : 8GB DIMM DDR3

Prozessor(en)
Prozessor : AMD FX(tm)-8120 Eight-Core Processor (4M 8T 3.4GHz/4GHz, 2.2GHz IMC, 4x 2MB L2, 8MB L3)
Sockel/Slot : AM2r2/AM3

Chipsatz
Speichercontroller : AMD F15 (Orochi) CPU HT Hub 2x 1.1GHz (2.2GHz), 2x 4GB DIMM DDR3 1.33GHz 128-bit

Speichermodul(e)
Speichermodul : Corsair CMZ8GX3M2A1866C9 4GB DIMM DDR3 PC3-14900U DDR3-1866 (9-9-9-24 5-34-10-5)
Speichermodul : Corsair CMZ8GX3M2A1866C9 4GB DIMM DDR3 PC3-14900U DDR3-1866 (9-9-9-24 5-34-10-5)

Grafiksystem
Monitor : ACR Acer P226HQV
(1920x1080, 21.7")
Grafikkarte : 2x AMD Radeon HD 6700 Series (10CU SM5.0 840MHz, 2GB DDR5 4.2GHz 256-bit, PCIe 2.00 x16)

Grafikprozessor
Compute Shader Prozessor : 2x AMD Radeon HD 6700 Series (10C 840MHz, 2GB DDR5 4.2GHz 256-bit)
OpenGL Prozessor : AMD Radeon HD 6700 Series (10C 840MHz, 1GB DDR5 4.2GHz 256-bit)

Physische Speichergeräte
Samsung SSD 850 EVO 250GB (498GB, SATA600, 2.5", SSD, SED) : 464GB (C:)
TOSHIBA MK1059GSM (1TB, SATA300, 2.5", 5400rpm, 8MB Cache) : 932GB (E:)
WDC WD20EZRX-00D8PB0 (2TB, SATA600, 3.5", 5400rpm) : 2TB
ATAPI iHOS104 (SATA150, BD-R, DVD+-R, CD-R, 2MB Cache) : k.A. (F:)