Probléme d'affichage

slt, j ai un problem de carte mer que jvien dachter c un G41-775 IDE voici ces caracteristiques


Feature:
CPU
LGA775 for Intel P4/Celeron D/Core 2 duo/Dual
core/Core 2 Quad CPU
Supports 1333/1066/800/533MHz FSB

Chipset
Northbridge: Intel® G41 Express Chipset
Southbridge: Intel® ICH7

Memory
Supports DDR3 1333/1066/800 memory
Dual Channel architecture support up to 8GB
by 2 DIMM slots

Graphics
Intel® Graphics Media Accelerator X4500
1* VGA port

Audio
Onboard HD AUDIO specification compliant

LAN
Onboard 100M LAN

Expansion Slot
1 *PCI Express X16 slot
2 *PCI slots

I/O Connectors
1 * IDE connector（option)
4 * SATA 3Gb/s connector
1 * front panel connector
1 * front audio connector
4 * USB 2.0/1.1 connector
1 * COM port
1 * PS/2 port
1 * VGA port
1 * RJ-45 port
1 * LPT port
1 * audio jacks

On Board Ports
24 PIN ATX POWER PORT
4 PIN ATX 12V POWER PORTc
4 USB 2.0 PORTS
1 CPU fan connector
1 F_AUDIO PORT

Accessories
CD DRIVER, BACK PANEL,MANUAL,SATA CABLE,IDE
CABLE.

SIZE
241 x 168mm


donc le problem c que jai tout installer correctement toute ls connecteur, un ram ddr3 1066, un processeur LGA 775 Dual core 1.8mhz mais j ai un ecran noir

besoin d'aide svplai!!!