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My motherboard cant detect my new video card?

Tags:
  • Graphics Cards
  • Hard Drives
  • Motherboards
  • Graphics
Last response: in Graphics & Displays
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July 16, 2014 12:26:46 AM

Ok so i bought a almost new pc (exept the HDD) here are the specs:
CPU - QuadCore Intel Core i5-3340, 3300 MHz
Motherboard - ASRock H61M-DGS
Video - Powercolor r7 260X 2gb oc
Power supply - Corsair VS450
When i start up the pc the fan on the video works, but the monitor that is plugged in the video card
dosen't detect a signal. When i plug the monitor in the motherboard it works and it cant detect the video card. When i put the video card in another pc it works fine, also when a put another video card in my pc, also works fine. I moved the power supply to check and it works fine too with the same video card. I flashed the bios to the latest version but the only option to disable the onboard video is "preferd graphics adapter" witch only has onboard and PCI Express and is always on PCI Express. Also this is a brand new installation of windows.

P.S. Sorry fot he bad english but all the forums in my native language have no idea what is going on!!!

More about : motherboard detect video card

a b U Graphics card
a c 99 V Motherboard
July 16, 2014 12:53:22 AM

Suspect the PSU may be dropping on the 12v line, the VS range have always had issues.
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July 16, 2014 12:58:16 AM

That is not it when i moved the video to the other pc i moved the power supply as well because the other pc was old and had a 400w power supply. :( 
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a c 101 U Graphics card
a c 153 V Motherboard
July 16, 2014 1:02:49 AM

Update the BIOS of the mobo.
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July 16, 2014 3:33:40 AM

Already did that its the lastest version. :( 
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July 16, 2014 5:04:24 AM

I had a similar issue with a Powercolor graphics card and I could not get it to work no matter what I tried. I ended up having to take a loss and send the card back to Newegg because of compatibility issues and took a $20 dollar shipping loss and $20 dollar restocking fee to send it back.

On some of the newer Dell Optiplex models I have to work with it seems that there are a lot of problems getting dual monitors to setup and work properly with both on-board video and the dedicated PCI-E video card. You should have your BIOS setup as it is to "PCI-E Express card" or "preferred / auto" if you cannot disable on-board video. The BIOS I have would let you choose PCI-E External (PEG), PCI-E (INT), and Auto. If you can set it to auto or not I am not sure but I do know that if you remove the power cable from the power supply and disconnect all your video cables from your computer and then plug in the video cable to the PCI-E card and not the on-board video and plug the power back in that it should power on just for a second to detect the video.

If it does not power on for a second when you plug the power cable back into the PSU I would try unplugging the power again, removing the CMOS battery for 15 minutes or so and plug your Powercolor graphics card back into the PCI-E slot, connect the video cable to that card and not to onboard video, plug the CMOS battery back in and then plug the power back into your PSU. You should see some kind of activity like the CPU Fan spinning up like your PC is powering on for a second and it will shut back off (I think this is for it to detect what video is attached) from what I have seen and experienced.

The problem with my power color card was that apparently it did not like the motherboard which was an Intel based motherboard, and I am not sure why since everything is supposed to be "backward compatible" with PCI-E and I have found that for some motherboards it is not.

I could not determine if this was due to the UEFI BIOS ready setup or not but I do know that with the way Windows was installed on the box that I have it was set natively to RAID and not ACHI, and I believe something was screwing it up during boot with the Video BIOS which was UEFI Ready. I could get a display and it would say "A bootable device has not been detected.rom the FV] Please refer to the Product Guide at http://support(dot)intel(dot)com/support/motherboards/desktop.

The only way I could even get this to display during boot was to use the DVI > VGA adapter that came with the card and connect it to the VGA cable which then plugged into my 24" HD display's VGA port.

I will post something else to see if anyone has any suggestions to a fix for that but that is really all I can offer you. My symptoms were similar to yours, no matter what kind of cable I used (HDMI, DVI, Display Port) all would boot up with a blank screen for some time and eventually go to "no signal". I hope what I have offered here helps you out somewhat but it is possible if your BIOS is setup like mine was when Windows was installed it may be doing the same thing. I am not sure if it is due to the Native RAID setup in BIOS or the Video card's UEFI Ready BIOS. I was not able to get it to work period even unplugging all my hard drives and attempting to boot from Ubuntu in a live-cd environment.

Good luck.
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