Asrock Z77 extreme 6 doesn't detect my Sapphire HD 7850 GPU

[freddy31]

@freddy31

Do you still have the card? If yes, try setting your primary graphics adapter to "onboard" in BIOS and then you should be able to boot with the graphics card inserted. After that check System Browser in BIOS to see if the card is being detected.

I 've already sent my sapphire gfx card to my vendor for inspection. Will get a replacement card soon to check if I still got issues.
Best
Freddy

[freddy31]

I got a replacement card today and my new Sapphire HD 7850 works flawlessly, hooray. The card I got has a different Product Number and different display connextors then my previous model.

[-AB-]

I got a replacement card today and my new Sapphire HD 7850 works flawlessly, hooray. The card I got has a different Product Number and different display connextors then my previous model.

It's good that you got a replacement. I believe the problem you were experiencing was due to the graphics card bios.

The card has gone back for service. I have already tried your suggestion, the card was not detected in System Browser unless the PCIe slot was set to Gen1.

Regards

And what about you Gentletouch? Did you also get a replacement? Please let me know.

Anyway, I am also considering taking my card to the service center. But not sure if I will get a replacement though. The card works fine once it is detected. I have tested it for 12 hours straight. It would be a huge waste of time if I take the card to the service center and they just return it the next day saying that it's working fine for them.

For now I am using the card by setting the PCIE2 link speed to Gen1 everyday when I turn on my PC. And about 20-30 minutes later I set it to Auto again and it works.

[Fractalz]

Hi,
I am having exactly the same issue.
Asrock Extreme 6
Sapphire HD 7850 OC Edition
intel i5 3570K

The card is not detected if it is installed in PCIE slot 2 unless the link speed is set to Gen 1. The card is detected and works with no problems if it is installed in PCIE slot 4.

Any help would be greatly appreciated.

Thanks,

Zavia

[-AB-]

Hi Zavia,

Please try using your PC for a few hours with PCIE2 link speed set to Gen 1 and then reboot and set the link speed to Auto to see if the card is detected. If not then set it to Gen 1 again and continue to use your PC. You can try setting the link speed to Auto again after another few hours.

And please post GPU-Z screenshots of your card. I am interested in your card's BIOS version, clock speeds, etc. Here's a screenshot that shows the various details of my card - http://i46.tinypic.com/2vvq73s.png.

By the way, I submitted my card to the local Sapphire distributor yesterday. Will let you know if it turns out to be the card that is faulty.

Also, I came across the following thread which is also about the exact same problem that we are experiencing. ASRock Z77 Extreme 4 not detecting Sapphire 7850 in PCIE x16

[João Martins]

I'm having the same problem. If I leave my PC powered off for a few hours I get nothing on my screen.
My system is:
NTEL CORE i5 3550 (3.3GHZ) SKT 1155
ASROCK Z77 PRO4
GSKILL KIT 8GB DDR3 1600MHZ RIPJAW X (CL9)
NOX BLAZE SX
XFX PRO 550W CORE EDITION
SAPPHIRE HD7850 2GB DDR5 PCI-E

How did you guys resolved it?

[Fractalz]

No luck so far with that method. Tried it a couple of times.

I've attached the GPU-Z screenshot, one where it is in Slot 2 and another when in slot 4. The interesting thing is that it is automatically detected if it's in Slot 4 however as you can see from the screen shot, it still runs at Gen 1 speed.

Hi Zavia,

Please try using your PC for a few hours with PCIE2 link speed set to Gen 1 and then reboot and set the link speed to Auto to see if the card is detected. If not then set it to Gen 1 again and continue to use your PC. You can try setting the link speed to Auto again after another few hours.

And please post GPU-Z screenshots of your card. I am interested in your card's BIOS version, clock speeds, etc. Here's a screenshot that shows the various details of my card - http://i46.tinypic.com/2vvq73s.png.

By the way, I submitted my card to the local Sapphire distributor yesterday. Will let you know if it turns out to be the card that is faulty.

Also, I came across the following thread which is also about the exact same problem that we are experiencing. ASRock Z77 Extreme 4 not detecting Sapphire 7850 in PCIE x16

[João Martins]

I see from your screenshots that in slot 4 you get PCIE x8. I only get x4, is it normal? I'm currently running my graphic card on slot4 since this stupid Asrock z77 pro4 board doesn't like it other way. I'm very unhappy with this board, never happened to me before, and it's the last asrock I'll ever buy. I ran 3dmark 11 and get 5100 points using slot 4, what about you guys?

[-AB-]

The problem we are experiencing is due to faulty PCIE switches in our motherboards. TweakTown member hansip87 had the same problem with his Gigabyte motherboard. Have look at his post here - Sapphire 7850 GPU wont detect in PCIE x16 on z77 UD3H, works fine in x8.

Anyway, you guys should get your motherboards serviced or replaced. Whichever is possible. I am planning on getting my motherboard serviced. For now I am using my card in the PCIE slot 4. I got my card back from the service center yesterday. They said it was working fine for them which is what I expected they would say.

The interesting thing is that it is automatically detected if it's in Slot 4 however as you can see from the screen shot, it still runs at Gen 1 speed.

That's a power saving feature. Click on the question mark for more info.

I see from your screenshots that in slot 4 you get PCIE x8. I only get x4, is it normal?

Yes it is normal. Your motherboard has only 1 PCIE 3 x16 slot. The other one is a PCIE 2 x16 slot which can also run in PCIE 3 x4 mode. ASRock > Z77 Pro4

[nascar59]

i got an Asrock Extreme 4 and got same problem wit a XFX Radeon 6770 it first was working fine for a few moths I had to change cpu from I7 to I3 then I7 now can not not get 6770 working that all try gen1,gen2 or gen 3 got nothing try the 6770 on a different pc works fine but for now using it with a Nvidia Geforce Gt 520 that Okay here no gamer but can not not figure WHY try both Pcie nothing with 6770 (yes got it connected to the 6 pins to motherboard) am lost but working NOW with the nvidia
(
Asrock Extreme4 Bios 2.30
16gig ram corsair Vengence
I7 cpu at 4.
samsung ssd 128
now Geforce Gt 520 want my XFX6770
1 terabyte for Movie & Pic
windows 7
Ultimate edition 3.5 (BEST LINUX YET)