Windows 7: Problem in Device Manager

i have this pci standard pci-to-pci bridge in my device manager with a yellow triangle and i think because that, i cant install my video card correctly how i can fix this problem?

i have a windows 7 Ultimate 64 bit

We will need to know your motherboard model so we can show you the right driver to install. Usually, everyone recommends that you fill out the system specs in your profile. Welcome.

oo sorry about that my pc is:

Amd Processors 6000+ 3.0 dual core
3 GB of Ram ddr2 800mhz
Motherboard Asus M2a-vm
Video card PCI express model: E-Geforce 8400gs 512mg ddr2

How i need to do becuase when im installing the nvidia driver the 160.92 for windows 7 64bit the error put is " The Nvidia setup program could not locate any drivers that are compatible with your current hardware. Setup will now exit" help me im desesperate i donr want back to xp!!!!!!!!!

Download and install the chipset driver for Vista x64. ASUSTeK Computer Inc. Then the driver from NVidia for your card.

But wich driver i need to download?

AMD Chipset Driver Program for Windows 32bit/64bit Vista.(WHQL)

im download the Chipset Driver and the problem continues, i dont understand why, how i can do now?

In four minutes you downloaded ~127 mb, installed and then then installed the graphics card driver? Doesn't seem realistic to me.

previously he had downloaded and installed and now I did it again and still the same problem as I do please help!!!!!

Did you try to reboot after the chipset driver install? If so, try to install it manually using the device manager.