Graphics card issue...

[Raimiette]

I am having an issue with a new graphics card I purchased. It is a an NVIDIA GTS 250.

I wanted to upgrade from my old NVIDIA 8500. In order to do this I had a buy a new power supply as well because my old one only put out 350W max and I need at least 450.

So, I hooked up the new PSU and graphics card and at first I had an issue with a loose RAM module (beeping code) but I’ve resolved that.

The issue now is that the PC starts but my monitor doesn't recognize my new graphics card. I thought it might have only been the new one but when I put my old one back in it didn’t work either. They don’t seem to send out a signal. I've double checked the monitor and the monitor cords and they work fine on other computers so I know it’s got to be related to my PC somehow.

It sounds like my PC is booting up fine now, and all the fans (including the graphics card fan) seem to be working fine but there's just no signal to the monitor. I don’t see any other wires or anything that should be connected to the cards so I'm just confused now.

I’ve removed and replaced both cards several times now so I'm pretty sure (unless I’m doing something really wrong) it's not a connection issue.

Does anyone have any suggestions on what this may be?

[KarmaKiller]

Do you have the power cable attached to the new GPU. I believe it will take a 6 pin power plug.
What is the make/model of the power supply you installed?
Could you give us some system specs? (Motherboard model, CPU model, etc)
The more info the better. We really have no idea what your working with.

PS:
Welcome to TechIMO.

[Raimiette]

I can give you all that information:

Product Specifications HP Pavilion Elite m9150f Desktop PC - HP Customer Care (United States - English)

The above will be the complete hardware/software specs. The only differences now is that my PSU is different as is my graphics card (I still have the old one though).

The new power supply is a Rocketfish™ - 550-Watt Power Supply (Rocketfish 550 W Power Supply Review | Hardware Secrets)

EDIT: Also yes, the new card does require the 6 slot plug and it is also plugged into the PSU. The old card though, doesn't require this hook up.

EDIT 2:
I tried to see if I could get the get the monitor going if I hooked it up to the motherboards integrated graphics but had no luck their either.

I did see though that when I plug the monitor in to either the integrated or the card the monitor does seem to recognize it's been plugged into something as it comes out of standby for just a couple seconds to say that it's going to sleep and then goes into standby again.