'No Signal' When Monitor is connected to GPU

[Bailey280899]

I installed a new Power Unit and Graphics card today (Corsair CX750M Modular and Sapphire Radeon R9 270X), but when I connected my monitor which I was using previously with another AMD card (to the graphics card slot, using a VGI - DVI adapter), it said "No Signal" and the monitor switched off.

System specifications -

OS: Windows 7 64bit
CPU: AMD FX6300
GPU: AMD Radeon R9 270X 2GDDR5
PSU: Corsair CX750M Modular
RAM: 8GB 1600MHz

Things to note:
I failed to install the drivers, I assume because I had to connect my monitor to the back of my motherboard, not my graphics card; which meant that my GPU wasn't detected and I was using onboard graphics. I am using an VGI - DVI adapter, which worked before, but doesn't work now. So I'm a bit suck. Oh and when I tried to install my drivers I an error, but no error code.

Suggestions would be appreciated.

 

[M0j0jojo]

So currently there is no dedicated GPU in the system and its running fine atm?

 

[Keemann]

You could try reseating the GPU in the PCIe slot. Uninstall the AMD drivers for the old graphics card and replace them (although it should work without doing this since it's an AMD GPU). Another thing is to disable the onboard graphics via the BIOS. Or if none of that works, I would RMA the graphics card.

 

[Bailey280899]

I've installed the GPU, but I'm stuck because if I plug my monitor into my GPU, 'No Signal', but if I plug it into my motherboard, it works, but it runs Onboard graphics. I can't install the drivers for my card because it's not seeing it as a connected device. Help, please.

 

[Bailey280899]

I plan on reseating it, but what about disabling Onboard groahics in bios, maybe you could link me to a tutorial?

 

[M0j0jojo]

Can you maybe try the GPU on some other PC, it could be anyones friends/family. So that you can see if its the GPU thats the issue or something else.

 

[Bailey280899]

I don't think that option is available to me.

 

[Keemann]

You can do via device manager or bios:

Device manager tutorial: https://www.youtube.com/watch?v=sj5xkaReCHI
BIOS: https://www.youtube.com/watch?v=BtDkczrf5fI

I agree with M0j0jojo, try the GPU in another computer as well.

 

[M0j0jojo]

Okay can you download this for me. and send me a snipping tool photo of it when you open the program. It should have Voltages and Temps of your components.
HWmonitor http://download.cnet.com/HWMonitor/3000-2094_4-10793486.html

 

[Bailey280899]

I'll look at that, but bear in mind that my card isn't being recognised, the fans are working, but no dice.

Also, I did reseat it, but still no signal.

 

[Keemann]

I'll look at that, but bear in mind that my card isn't being recognised, the fans are working, but no dice.

Also, I did reseat it, but still no signal.

Did you connect the pins? Usually a six or 8 pin?

If none of the above worked, I would RMA the graphics card and get a different one.

 

[Bailey280899]

The fans spin, I connected a 6-pin cable to one of the modular cables in the PSU. No display though. I reconnected my old GPU for now and I get display. Have I done something wrong?

 

[jonathanmlang]

When you connect the graphics card are you absolutely sure it's not being recognized by checking device manager with the monitor plugged in to the onboard graphics and the graphics card plugged in with no display connected? Even if it shows up as "Unknown Device"? And also when you say that you have failed to install the drivers, did you actually attempt to install them and receive an error or have you plugged the card into the motherboard and connected the display expecting the basic VGA driver to take hold while you install the correct driver? If that is the case I would expect the card to not work happily with the basic VGA driver. This is rare but possible.

 

[Vensul]

When you connect the graphics card are you absolutely sure it's not being recognized by checking device manager with the monitor plugged in to the onboard graphics and the graphics card plugged in with no display connected? Even if it shows up as "Unknown Device"? And also when you say that you have failed to install the drivers, did you actually attempt to install them and receive an error or have you plugged the card into the motherboard and connected the display expecting the basic VGA driver to take hold while you install the correct driver? If that is the case I would expect the card to not work happily with the basic VGA driver. This is rare but possible.