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.

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?