Thanks for all the help, ill check all your links and do what i must. Ill try saving windows 7 too, but it seems 10 makes everything easier., maybe ill switch OS as a last resort.

Ill post how things ended up for me when i have time.

Hey, been mining ETH for a couple of weeks now but after doing some research i found out my rates were really low. Now, i know bios modding is common enough for a mining setup, but i want to avoid that, i have bad experiences flashing things and now im just traumatized in a way, but i have read that tweaks can be done, either on the OS, getting some specific drivers and doing some minor adjustment to the clocks and voltages.

So far i have been running everything stock, and i get a sad rate of 16 mh/s on each card, temps are over 60...

OS is: Windows 7 x64

Hardware is :

Cards are Sapphire Radeon RX 580 4gb Pulse
Mobo is H81 PRO BTC R2.0

Im running the latest as today, drivers from AMD and like i said before, everything is pretty much stock.

Can anyone point me to some proper drivers and OC tool and some optimal numbers on memory clock and OC values. Any advice is welcomed.

Do remember that i want to avoid flashing bios... thank you all.