Page 1 of New(ish) GFX card no signal

As a pre-emptive guess, I'm going to blame the very old motherboard, but here goes

My youngest has just got a new GFX card & PSU for his PC, and bequeathed the castoffs to me, although they're both less than 6 months old. They both worked fine in his setup, so I know the 600w is enough to power the system

Installing the new card (RTX 3050) is resulting in no signal to the monitor. All leads & cables are correct, I've popped the older card (AMD Radeon RX470) back in so I know nothing's borked and at the very least I've got a new, slightly more powerful PSU in the case.

The motherboard, for info, is an intel DQ77CP (CPU 1) housing an Intel Core i5 2400. It's served me well and tries to keep up, bless it.

Google has given me a touch of advice, like hard resetting the monitor, but still no. I do have the AMD drivers on board for the existing card, but one assumed the new card would bypass them and install their own (which has happened in the past)


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I'd be surprised if having the AMD drivers still installed was the problem, as you say.

The card isn't defaulting to an empty port by any chance? Might also be worth resetting the bios to defaults or seeing if there is an update.


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The newer card has one HDMI & 3x DP outlets. I'm only using HDMI and it's what Max was using as well. The card that's currently installed uses the same. 

There does seem to be an update for the BIOS available, but it's through 3rd party vendors as support for the MB was dropped years ago. There is an .exe update avaialble, although when I try to install it give an error message telling me that the BIOS is legacy, but system information tells me it's UEFI.

I really don't want to flash the BIOS within BIOS in case I brick the board. This is another thing I have minimal experience of and looking at older forums, this does seem to be a common issue and it's mainly due to the interface with the monitors rather than anything deeper. At least that's what I'm hoping.

I am due an update at some point but that'll have to wait until the finances are healthy enough.

I may load the relevant drivers beforehand and see if that makes a difference.

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Bit the bullet & flashed the BIOS, which was nowhere near as painful as I though it would be. Now it's all nice and blue and mouse-controlled.

BUT - still no GFX card detected, not showing up anywhere. There is power running through the card as there's a little red LED near the 6+2 socket that turns off when it's plugged in. But the BIOS screen shows all slots empty

And as there's no Nvidia card detected, the installation software aborts and it's back to square zero

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This item was edited on Friday, 26th July 2024, 18:08

So it has onboard video as well as the Nvidia card? If so in the BIOS is there an init first option for the graphics card that's set to internal and not PCIe?

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Sorry, should have said. Borrowed a VGA cable and hooked the MB up directly to the monitor so I could see what was going on. The new BIOS (which I'm quite impressed with) showed every slot empty on the board



So as far as the MB's concerned, there's nothing there to interface with, and no choice of GPUs to set as primary

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Is the GPU powered seperately?

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Yes. 6+2 connecter straight from the PSU. The setup is exactly the same as the GPU that's in right now and working. I literally swap like for like. I know it has power as the little red light goes out and the fan spins. It's just not talking to the MB as far as I can see

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I'm out of ideas :(


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Yeah, moi aussi. I just don't think the elderly MB can handle the cheeky young upstart in the slot.

If I do manage to get it working I'll let you know, but cheers for your help anyway

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