My Motherboard doesn't recognise gfx cards Help?

dmferrett · 21 Nov 2013 at 09:36

I have a MSI Z77A-GD65 motherboard and run crossfire. I replaced the tower last night and now the pciE ports are not working. I've swapped around gfx cards, ports tried uninstalling reinstalling drivers the whole 9 yards.

The integrated graphics is working but I just can't get the 7950's working again.

I've even tried a different bios.

Has anyone else experienced this?

kfouwels · 21 Nov 2013 at 09:49

Are you booting with any of the monitors connected to the INTERNAL graphics ports?

If the board doesn't support bridging (can't remember what MSI calls it), or has it disabled, it'll override the GPUs and just run the integrated.

Swapping them once booted will have no effect.

(I'm assuming this isn't the case, but worth checking)

dmferrett · 21 Nov 2013 at 10:03

kfouwels said:
Are you booting with any of the monitors connected to the INTERNAL graphics ports?

If the board doesn't support bridging (can't remember what MSI calls it), or has it disabled, it'll override the GPUs and just run the integrated.

Swapping them once booted will have no effect.

(I'm assuming this isn't the case, but worth checking)

Thx for input, I was up all last night its driving me insane.

I tried resetting bios and rebooting with pciE card attached to a single monitor and it didn't work.

I wounder if there is something in the bios that disables the onboard graphics.

Help.

teppic · 21 Nov 2013 at 10:17

Have you tried with just one card?

dmferrett · 21 Nov 2013 at 10:20

teppic said:
Have you tried with just one card?

Yeap, swap them around too, top, middle and bottom pciE slots nothing works.

I'm praying the cards aren't dead.

teppic · 21 Nov 2013 at 10:27

You may have a short somewhere that's causing a problem with the slots. You could try taking the board out of the case and seeing if it works. In the BIOS make sure you've reset to optimised defaults. The board should automatically use the discrete card over IGP if one's detected.

Also try disconnecting everything except the cards and the RAM.

Biffa · 21 Nov 2013 at 10:32

Can you boot into windows with the onboard graphics connected to the monitor but with the 7950 plugged in? If so can you see the 7950 in Windows device manager? Also check with GPUz to see if its recognised.

dmferrett · 21 Nov 2013 at 10:37

Biffa said:
Can you boot into windows with the onboard graphics connected to the monitor but with the 7950 plugged in? If so can you see the 7950 in Windows device manager? Also check with GPUz to see if its recognised.

Yes I can boot into windows with the onboard gfx, the device manager does not show a connected 7950.

I've not used GpuZ but I'm guessing if device manger cant see it then maybe that wont see it either. :confused:

kfouwels · 21 Nov 2013 at 12:16

Are the cards drawing power, do the fans spin?

dmferrett · 21 Nov 2013 at 12:21

kfouwels said:
Are the cards drawing power, do the fans spin?

Yes the fans on the cards are spinning, but the system cant see them.

(I only changed the case, I cant see how or why this would effect the pciE slots and gpu's!!)

dmferrett · 21 Nov 2013 at 13:52

If I've killed my gfx cards and motherboard I'll get a PS4 and forget about pc gaming sadly....Just cant afford to replace motherboards and gpu's if that is the case here. Fed up..

teppic · 21 Nov 2013 at 14:15

As I said, you may have shorted something by putting it in the new case. The chance of both cards being dead is slim. Disconnect everything from the board except a card and the RAM to see if you can get the BIOS screen up.

BaDBoY_uK · 21 Nov 2013 at 14:21

Remove the gcards and blow onto your PCIe slows. There is a chance there is something in there shorting it, as mentioned

It is very strange that they are not even appearing in Device Manager

Can you test another gcard - other than the 7950s?

dmferrett · 21 Nov 2013 at 14:30

BaDBoY_uK said:
Remove the gcards and blow onto your PCIe slows. There is a chance there is something in there shorting it, as mentioned

It is very strange that they are not even appearing in Device Manager

Can you test another gcard - other than the 7950s?

I'll give anything a try, I've got my old timer HD5870 so I'll pop that in and see if it posts, if it does then its likely 2 dead 7950's, just the though breaks my heart lol, folking gutted.

dmferrett · 21 Nov 2013 at 14:31

teppic said:
As I said, you may have shorted something by putting it in the new case. The chance of both cards being dead is slim. Disconnect everything from the board except a card and the RAM to see if you can get the BIOS screen up.

Do you mean with cpu off as well?

Gregster · 21 Nov 2013 at 14:35

Could pay to take the mobo out and boot with it on something anti static. Use the basics of ram cpu GPU 1 hdd.

teppic · 21 Nov 2013 at 14:37

dmferrett said:
Do you mean with cpu off as well?

No. You need CPU + GPU + RAM and nothing else to get the BIOS screen up.

(Apart from power, obviously)

robnut · 21 Nov 2013 at 14:37

Are you plugging the power into the graphics cards?

Deceptor · 21 Nov 2013 at 14:37

Gregster said:
Could pay to take the mobo out and boot with it on something anti static. Use the basics of ram cpu GPU 1 hdd.

If you have the mobo box, that's perfect to test on top of, the MB will be fine on cardboard

dmferrett · 21 Nov 2013 at 14:50

Good tip for mobo box.

If the 5870 gpu works that means the faulty motherboard has taken out 2x7950's.

I plugged the connectors into the power supply.