Graphics card detection problem

[BlueEle]

I have just been messing around with my old graphics card in an older computer, and I am wondering why the GPU isn't being detected. The fan on it spins, but I am not sure if it is compatible with the motherboard. I have tried installing drivers for it through the nvidia installer, but it always says that there is no detected graphic cards to install drivers to. For those interesting this is the link to the computer, https://support.hp.com/us-en/document/c01486307, and this is the GPU https://www.geforce.com/hardware/desktop-gpus/geforce-gt640/specifications. Any help would be appreciated, thanks!

 

[Lutfij]

The case comes with a 250W PSU and given the age of the platform, I'm also assuming that the PSU hasn't changed since the system's purchase. This means that the capacitors n the unit due to wear and tear no longer allow for it to output effective power for the entire system with a discrete GPU onboard. FYI, you're going to need at least a 350W unit for the system when running a GT640 GPU.

You should stop with the GPU tinkering since it can result in the PSU blowing up on you and causing a fire.

 

[BlueEle]

The case comes with a 250W PSU and given the age of the platform, I'm also assuming that the PSU hasn't changed since the system's purchase. This means that the capacitors n the unit due to wear and tear no longer allow for it to output effective power for the entire system with a discrete GPU onboard. FYI, you're going to need at least a 350W unit for the system when running a GT640 GPU.

You should stop with the GPU tinkering since it can result in the PSU blowing up on you and causing a fire.

Oh, good to know, do you think if I had the right size power supply the GPU would be detected?