I have lost my installation cd for my geforce 8400 GS DMS PCI-e graphics card

SOURCE: added a ge force 8400 gs pci grfx card to hp a6120n monitor

Alright, let's give this a shot. Your system can handle it as the card only needs 71W of power.

Right-click your desktop and go to properties.

Screenshot.

Afterward select the tab at the top reading, "Settings."

Screenshot.

Now select your new video card in the, "Display" region and choose the device to be your, "Primary Monitor."

Screenshot.

Afterward try plugging the monitor into your new graphics card. It should work just fine.

SOURCE: Blank Monitor

I have the same system and card. The problem is the system is trying to run two monitors at once. Use Windows safe mode (F8 during boot) to uninstall any Pny drivers you may have put on. Reboot. Install the pny drivers again. Before rebooting, use the device manager to look at the display drivers. There should be two, an Intel one, and the pny Nvidia one. Disable the intel driver and reboot. Worked for me. Youmay also want to upgrade the power supply. The 3000 has a 225W and the 8400 card wants at least 300W.

SOURCE: Trying to install Geforce Verto 8400 GS card on

Seems like the graphics card simply isn't compatible with your motherboard either. However, have you tried installing the drivers for the new card with the old one still in, then inserting the new one, and booting up? That's the only thing I can think of that you didn't try yet...

SOURCE: i have a geforce 8400 gs pci interface. the

Hello gabini248,
Disabling "restart on system failure" may fix the problem: Right-click on My Computer, click Properties, click the Advanced tab. Under “Startup & Recovery,” click Settings. Under “System Failure,” uncheck the box at “Automatically restart.” You may have to restart your PC for the effects to take place.

SOURCE: nvidia geforce 8400 GS pci code 12 error not

Error code 12 is one of those errors I hope you won't ever receive, because fixing the problem can be rather difficult. There are two different things that can trigger this error. The most common problem is a resource conflict. Essentially, this means that two hardware devices have been assigned overlapping resources.

A corrupt Multiprocessor System (MPS) table can also cause error code 12. If the MPS table is corrupt, it can cause the BIOS to allocate insufficient resources to hardware devices. I have had a really tough time locating information regarding a solution to this problem. From what I have been able to tell, though, it appears that an MPS table can become corrupt as a result of a damaged hardware abstraction layer (HAL). If that is the case, then reinstalling Windows may fix the problem.

In plain English :D either you have 2 pieces of hardware trying to use the same resources (unlikely), or you have software that is trying to run the same driver twice. I believe that about the only way you are going to get rid of that message is with a clean install. Even then I wouldn't guarantee it.