Problem Detecting Video Card

[canitocool]

Greetings tommers. I am trying to help a friend that has a Gateway DX4300-11. I bought an Nvidia 210 1Gb 2.0 PCI-E Video Card. The computer has a 700w PSU. Recently the computer damage a former PCI-E video card with almost the same specification as the brand new installed. It was working fine until the card got damage. Now, I am having the problem that the replacement video card is not detected throught Windows 7 64bit Ultimate.

I reset the bios with the CMOS bridge pin and also by removing the power cord and the battery. Once the bios show the time and date error, I went to bios and change the priority of the video card from ONBOARD to PCI-E as I did with the other former video card. I first want to turn on the computer with the monitor video cord connected to the embedded video card and I can see display of BIOS information and get into Windows, but when I go to Hardware manager, it won't show that there is another video card beside the embedded detected. I also booted the computer with the monitor cable connected to the VGA port of the Nvidia card, it won't display the BIOS information as the embedded video card. I am thinking that the PCI-Express slot got damage, but I want your brains giving me other workaround that I had not made as above explained. Thanks in advance.

 

[canitocool]

Motherboard was replaced as requested by my friend. My best guess for this problem is the PCIe port damage, as another card was placed in the same port and didn't shown anything on screen.