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

[Gentletouch]

My new Asrock Z77 extreme 6 is not able to see my Sapphire HD7850 GPU, either in the BIOS or windows. The on-board graphics work normally. TheSapphire works normally in another computer. Another ATI card (5750) works finein the Asrock. I have tried all the PCIe slots none of which work. I have triedreseating it several times. As far as Ican tell it is all wired up correctly with a 750W PSU. Can anyone help?
System:
Asrock Z77 Extreme 6
Adata XPG Xtreme v1.0 16Gb (2x8GB) DDR3 (2133MHz)
Intel Core i7 3770K 3.5GHz (Ivybridge)
Sapphire HD 7850 2048MB GDDR5

[freddy31]

Same here - but with a different board: I'm using an ASRock Z77 Pro4-M on bios 1.2 a 3570k processor and a retail Sapphire HD7850 2GB.
No signal, 5x beep with the graphics card inserted. Boots fine if card is removed and only using the integrated gpu.

[ASRock TSD - Emily]

Dear all,

I test Gigabyte HD7850 on Z77 Extreme6 BIOS P1.70 and P1.90, system works normally.

Please kindly refer to below suggestions for testing.
1. Clear CMOS to try.
2. Install the VGA card to other PCI-E slots to check whether the system works.
3. If possible, please try the VGA card on another system to check whether the symptom still occur.

Thanks!

Hi Gentletouch,
Please kindly provide the detail model name of VGA card and product link for me.
I will try to borrow the VGA card from Sapphire for checking this issue.

Thanks for your help!

Have a nice day
ASRock TSD
Emily

[-AB-]

I am having a similar problem with my ASRock Z77 Professional motherboard and a Sapphire Radeon HD 7850 which I purchased last Saturday. According to GPU-Z, it seems to be the OC edition even though it wasn't labeled as such in the box. Sapphire Technology Web Site

Anyway, I have done some testing and here's what happens in my case. The card is not detected in the PCIE2 slot if the system is powered on after being off for hours. If I then set the PCIE2 mode to Gen 1 in BIOS, the card is detected. If I immediately set it to Auto, the card is once again not detected. If I boot into Windows while the PCIE2 mode is set to Gen 1, and then reboot after a few minutes and set the mode to Auto, the card continues to be detected. After that if I shut down the system and turn it on after a few seconds, the card is still detected. But if I shut down the system and leave it off for hours and then turn it on, the card is once again not detected. I have to once again set PCIE2 mode to Gen 1, boot into Windows and then reboot and set PCIE2 mode to Auto. This does not seem to happen in the PCIE4 slot. The card was detected fine when I installed it in the PCIE4 slot. The problem also doesn't occur in the PCIE2 slot with my old Geforce 8800 GT card. So, it seems the problem is with this particular card.

Edit: Forgot to mention the BIOS version. It's 1.20. Now I see a new version was released today. Will flash it and see if the problem occurs again tomorrow.

[ASRock TSD - Emily]

Dear all,

About this issue, please kindly update the latest BIOS from below link to try first.
Link: ASRock > Products > Motherboard Series

If any question, please kindly let me know.
Thank you!

Have a nice day
ASRock TSD
Emily

[Gentletouch]

I have just updated my BIOS to 1.9. The card wasstill not detected. However when I changed the PCIE2 Link Speed to Gen 1 thecard is detected and I can boot into windows. When I change the PCIE2 LinkSpeed back to Auto the card is no longer detected. At least now I know the hardwareis all functional.

Here is a link to my card:

http://www.overclockers.co.uk/showproduct.php?prodid=GX-295-SP

(Sapphire HD 7850 2048MB GDDR5 PCI-Express Graphics Card)

Thank you for the help.

[-AB-]

BIOS update didn't work for me either. I powered on my PC today and there was once again no display (the card was probably not detected). But it seems setting PCIE2 link speed to Gen 1 is not necessary. When there was no display, I just let it boot into Windows. After the computer booted into Windows, I let it stay powered on for a few minutes and then shut it down. After I powered it on again, the card was detected and there was display. I remembered something like this happening when I first installed the card so decided to give it a try today instead of changing the PCIE2 link speed to Gen 1.

[Gentletouch]

I have tried rebootiing from windows but in my case the only way my system detects the sapphire card is if I set PCIe2 to Gen1. Whan set to Auto, the system cannot see the card.

Regards

[freddy31]

I have tried rebootiing from windows but in my case the only way my system detects the sapphire card is if I set PCIe2 to Gen1. Whan set to Auto, the system cannot see the card.

Regards

New bios V1.3 for Pro4-M didn't work for me neither, my Sapphire 7850 2GB is not detected. The Asrock Z77 Pro4-M does'n seem to offer an option to set PCIe2 to Gen1. In fact, I can only access the option PCIe1 and it doesn't matter if I set it to Auto or Gen1 the graphics card is still not detected.

[ASRock TSD - Emily]

Dear all,

Thanks for your testing and reply.

I will borrow the VGA card from Sapphire for checking this issue.

If any update, I will inform you.

Sorry for the inconvenience.
Thanks!

Have a nice day
ASRock TSD
Emily