Quote from: Cyan_Antares on December 10, 2017, 12:37:28 PM

Quote from: Steverin06 on December 10, 2017, 04:43:49 AM

Does that only apply to when you add a new card off another PSU? Because I was able to get all 5 going on a single PSU plug and play, and adding the 5th on cast amd config.

Edit: just ran ddu in safe mode, reinstalled block chain drivers and the result is the same. Any cards attached to second PSU don't show up in windows. Tried a different SATA cable. I know they're getting power because the fans were spinning when reinstalling drivers.

have you tried switching the risers? They are a source of issues.

Quote from: Denson87 on December 09, 2017, 08:53:46 PM

I've a strange Problem now...was running 2 Vega56@64 Air Bios but was unable to get them stable so i was running with Bios Switch in Position 2(Should still be 56 Bios also if 64 is on Position 1 right?) at 3700H/s with CastXmr

Now i flashed both back to original 56 Bios and iam able to get ~1970H/s with both Cards if just 1 Card is plugged. If i plug in the second Card and start the miner i get much artefacts and the pc crashes. Ive an old Z77Pro 3 Board with 2 PCI-E Slots and it seems that its always the Card in 2nd Slot which crashes the System. Any ideas why its crashing now and not before with Bios Position 2?

have you disabled crossfire and so on? http://vega.miningguides.com/

Thank you for the suggestions. Crossfire disabled, tried a different riser, all risers are powered by primary psu. Also tried to power the 5th card off secondary psu. I originally setup the 4 cards with that guide and it's been smooth. Again, I can get 5 working just fine if all are plugged into primary psu. It's only when it's plugged into secondary that it won't show up in windows.