one question.
i mining eth, then in a week ago i change to mine ZEC, just to try it for and hours, but then i swich back to ETH mining but i could not start miner (before i tried mining ZEC everthink went fine). so i reinstal GPU driver and then i try again ETH and it works and i leave it till today. Today i want to try ZEC, but could not start the miner.
What can be the problem?
That's too vague.
What miners where you using for eth?
Driver version?
Nvidia or AMD?
What GPU's?
What motherboard/cpu/ram?
What OS?
claymore dual mining for eth 7.4
claymore zec 7.0
driver latest crimson 16.11.4 (also tried on 16.9.2 and 16.11.3)5*rx 480 oc 8gb
bios v4
asrock btc pro/celeron/8gb ram
wiin 10.
seting on custom bios are 1150/2150.
thx
I have that problem too, anyone helps us plz

I've reinstalled windows, driver so many times. It could run fine just 1 time. Then if I reset or it's crash, I couldn't login back to windows.
I've unplugged all gpus, uninstalled and reinstalled driver, it could run fine 1 time (both zec and eth). Then it moved to next loop.
I've tried on windows 8.1 and 10.
Driver crimson 16.11.4 & 16.9
6 RX 470, modded bios
Ubuntu is fine, but zec tool is so slow