Hi all
maybe can help me with my 6* rx vega 56 rig
Setup is
asus prime z270-p - 4G enabled
8gb DDR4
120gb ssd
1650 watt gold PSU
blockchain drivers instaled
windows 10 latest updates (installed yesturday from microsoft)
For now connected 4 * vega 56 cards BUT in device manager i see only 1 vega and intel graphic adapter.
i cannot run more then one card but all others connected properly and running on rig but not apears in device manager.

any ideas how to run 4 cards and more?

thanks in advance for any help.

You should have another GPU )) 1080 TI not 1080

In events only that system was shutdown unexpectedly - because of starting miner. i tried do under clock GPU and memory but it not helped. not works. very weird 
[/quote]
Put each riser on 1 separate sata line from PSU. One with disk/ssd can share with one card.
[/quote]
Problem soved. i added one more PSU 500W for one card and for now is OK. But it realy strange that Gigabyte 1200W Platinum (XP1200M) not enougth capasity for rig with 3 * GTX 1080ti.

i found this one on system log

[ Name]  Microsoft-Windows-Kernel-Power
   [ Guid]  {331C3B3A-2005-44C2-AC5E-77220C37D6B4}
 
   EventID 41
 
   Version 2
 
   Level 1
 
   Task 63
 
   Opcode 0
 
   Keywords 0x8000000000000002
 
  - TimeCreated

   [ SystemTime]  2017-07-12T08:34:26.850809400Z
 
   EventRecordID 3605
 
   Correlation
 
  - Execution

   [ ProcessID]  4
   [ ThreadID]  8
 
   Channel System
 
   Computer 1080TI
 
  - Security

   [ UserID]  S-1-5-18
 

- EventData

  BugcheckCode 0
  BugcheckParameter1 0x0
  BugcheckParameter2 0x0
  BugcheckParameter3 0x0
  BugcheckParameter4 0x0
  SleepInProgress false
  PowerButtonTimestamp 0

In events only that system was shutdown unexpectedly - because of starting miner. i tried do under clock GPU and memory but it not helped. not works. very weird 

Thanks for your help. i tried excavator but on 3 cards it not works too. also i tried to run 3 miners 1 card 1 miner. when i run 3 card system go to reboot. something wrong with my hardware on equhash algoritm?

Risers ver6, Claymore 9.7 miners works perfect up to 37 mh/s per one card and all cards works good. The main issue when i start EWBF ver 0.3.4b - this one works only with 2 cards. i tried to choose in conf -- cuda_devices 0 1 gpu's - works 0 2 - works, 1 2 works. It is not GPU issue. all cards works good. i can not understand why all 3 GPU not works in same time with EWBF ver 0.3.4b.

Dears,
Can anyone help me with this?

Wed Jul 12 11:06:31 2017
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 384.76                 Driver Version: 384.76                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name            TCC/WDDM | Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GTX 108... WDDM  | 00000000:01:00.0  On |                  N/A |
|  0%   37C    P8    17W / 250W |    212MiB / 11264MiB |      1%      Default |
+-------------------------------+----------------------+----------------------+
|   1  GeForce GTX 108... WDDM  | 00000000:04:00.0 Off |                  N/A |
|  0%   36C    P2    51W / 250W |    147MiB / 11264MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   2  GeForce GTX 108... WDDM  | 00000000:05:00.0 Off |                  N/A |
|  0%   38C    P2    52W / 250W |    147MiB / 11264MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID  Type  Process name                               Usage      |
|=============================================================================|
|    0       444  C+G   Insufficient Permissions                     N/A      |
|    0      1400  C+G   ...ost_cw5n1h2txyewy\ShellExperienceHost.exe N/A      |
|    0      1768  C+G   ...indows.Cortana_cw5n1h2txyewy\SearchUI.exe N/A      |
|    0      4948  C+G   C:\Windows\explorer.exe                      N/A      |
+-----------------------------------------------------------------------------+

it works with 1 GPU and it works with 2 GPU's. when i add 3 GPU's it go to reboot.

sorry forgot about this. Power Gigabyte 1200W 80 platinum. this power more than anougth for 3 cards. 

Hey miners)
Could you somebody help me with one issue
i have 3 GTX 1080ti Gigabyte on my rig. windows 7 x64 instaled. latest drivers from nvidia website. On claymore ETH miners i have about 36.7 mh/s in all 3 cards. works perfect.
When i start EWBF ver 0.3.4b. windows go to reboot. with 2 cards works good. with 3 cards goes to reboot. What could be the issue?