AnsweredAssumed Answered

VEGA 64 - not recognized fans not spinning!

Question asked by calcite on Feb 7, 2018
Latest reply on Feb 10, 2018 by plumboby

Hi,

Can you please give me some advice, I'm heaving trouble with new Sapphire RX VEGA 64 Cards.

 

I had two cards running before on my motherboard:

1. slot PCIe 16x - GTX760 (working)

2. slot PCIe 16x - RX470 (working)

 

Changed to 2x VEGA 64 cards:

1. slot PCIe 16x - VEGA 64 (working)

2. slot PCIe 16x - VEGA 64 (not detected fans not spinning - overheating)

 

Tested and plugged old cards back as it was and 2. slot does not work anymore:

1. slot PCIe 16x - GTX760 (working)

2. slot PCIe 16x - RX470 (not detected fans not spinning)


Tested only one card on 2.slot:

1. slot PCIe 16x - Removed no card

2. slot PCIe 16x - VEGA 64 (1 long beep and 3 short beeps)

Tested only one card on 3.slot:

1. slot PCIe 16x - Removed no card

2. slot PCIe 16x - Removed no card

3. slot PCIe 16x - VEGA 64 (1 long beep and 3 short beeps)

 

Conclusion:

1. PCIe 16x slots are not the problem (not broken or dusty)

2. All cards are working but only in 1. PCIe 16x slot

 

So far:

1. Uninstalled drivers with DDU about 4 times

2. Installed and tested with different AMD drivers 17.xx - 18.2.1

3. Updated Motherboard BIOS

 

Still does not work! Please help!

 

Motherboard: ASUS P9X79 https://www.asus.com/Motherboards/P9X79/

PSU: CROSSAIR RM850 - 850W

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