Well guys, now i'm with everything...
The problem was with the VGA, but now I have a new problem. After sometime using the system it just turn off. My config is:

Huntkey GreenStar 550w PSU
IN9 32-Max
E6600
Coolemaster HyperTX
XFX 8800GTS 320mb
2x 1gb Dominator ddr800 4-4-4-12@2.1v
2x Seagate 320MB 16MB Sata 3gbs


Sometimes its about 4 hours.. sometimes 1 hour.. or less...
my temps are okey... and I'm at stock

here r the temps by everest:

Temperatures
Motherboard 24 °C (75 °F)
CPU 29 °C (84 °F)
CPU #1 / Core #1 29 °C (84 °F)
CPU #1 / Core #2 32 °C (90 °F)
PWM1 38 °C (100 °F)
PWM2 39 °C (102 °F)
PWM3 39 °C (102 °F)
PWM4 39 °C (102 °F)
PWM5 38 °C (100 °F)
GPU 38 °C (100 °F)
GPU Diode 47 °C (117 °F)
GPU Memory 38 °C (100 °F)
GPU Ambient 35 °C (95 °F)

And i'm using 1.1 Bios from abit website..
what shoul I do?