geforcefx 5700LE

i have:
kinetiz 7t
amd athlon 1.4ghz
384ram
albatron geforce fx5700LE
directx9.0c

when i open dxdiag and i do test direct 3d,in 1st test (7 interface)my monitor is black.when i try play sims 2 my pc restarting after entering in level.
i try this with ALL drivers for my graphic card and ALL directx version.i do format and again nothing.my last graphic card was geforce mx400,and the sims 2 was play(with no good graphics of course)what can i do???

sorry for my english,i am for greece...;)

Your power supply may not be able to handle the load created by the new video card. Replace it with a high quality brand-name 300+ watt unit.

The other thing you should do is to make sure you have the latest VIA 4-in-1 service pack installed. This is the motherboard chipset software.

Also, make sure the motherboard firmware is up to date, check the manufacturers website for this info.