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No signal from GPU - Mobo at fault?

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  • Motherboards
  • Graphics
Last response: in Graphics & Displays
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May 7, 2013 1:40:11 PM

I'm running a Radeon HD 7750 on a Dell B75 motherboard, from an Inspiron 660s.

The crappy motherboard is the only thing I have left to upgrade on my 660s, everything else has been upgraded from stock. CPU, PSU, RAM, you name it. I feel like after a while of running a 7750 and a 3570k this cheap ass mobo might finally be crapping out, whether it be the PCIe slot, or something to do with power phases.

I have been running this card for months, now all of a sudden if I hook my graphics card up to my monitor, I get no signal at the POST / BIOS screen, and everywhere else. The card heats up, and the fan spins, so it's getting power and etc.

With my monitor hooked up to my on board video, (and the GPU in the PCIe slot) If I boot into windows with the Catalyst drivers installed, then windows freezes at a black screen. If I boot into windows with the drivers uninstalled, then I can boot to the desktop. When I go to device manager, Windows reports code 10 on the GPU.

GPU-Z can still detect some info about the card, and when I install the catalyst drivers it successfully detects the card and proceeds with installation, So I don't see how the card could be at fault.

I don't have another motherboard to test the card on, so what do you guys think is the problem: The card or the Mobo?

More about : signal gpu mobo fault

a b V Motherboard
May 7, 2013 2:43:26 PM

Considering you get video from the onboard gpu and not the dedicated one the most likely solution is that you just need to go into the bios and disable the onboard gpu and force it to use the PCIe/PEG.
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May 7, 2013 2:47:04 PM

mouse24 said:
Considering you get video from the onboard gpu and not the dedicated one the most likely solution is that you just need to go into the bios and disable the onboard gpu and force it to use the PCIe/PEG.


That was my initial thought, however my bios doesn't support any useful toggles like that. :pfff: 
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a b V Motherboard
May 7, 2013 3:32:06 PM

Interesting, it should work though. I've never had to deal with a code 10 error before so I don't know how much help I will be.

Have you looked to see if you have any bios updates?

I also found this thread: http://www.tomshardware.com/forum/55896-63-device-start...

Mainly the second post, I doubt the card is faulty though.
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