Thanks a lot for your answers, it's helping.
Well now I have another issue, it seems the tab "miner status" doesnt show anything anymore when i click on it...
https://framapic.org/YuR729YQcbpc/rheIg0GxNH6m.pngIs it just the pool isnt configured well or something else? I m a bit worried i harmed the miner by putting the frequency to 750.
Thanks
Go back to your system page and see what it says under hardware version?
Probably just your miner configuration settings are wrong?