These are the latest RX580 drivers for mining.
Sapphire NITRO+ RX580 8GB Hynix Memory - Bios mod download
https://mega.nz/#!YqYzELbI!zeG0qWAkoMlz-vI9HlwH9uK41b_jEAYFP5ud7QIKE9w
RX580 4GB Elpida memory - Bios mod info
https://anorak.tech/t/rx-580-gaming-x-4gb-elpida/3632/4
afterburner 4.4.0 beta 19 download link
http://www.guru3d.com/files-get/msi-afterburner-beta-download,31.html
Increase virtual memory
Increase the Virtual memory size
Open My Computer.
Click View system information in the left hand side of the My Computer window. ...
Click the Advanced tab. ...
Under the Performance Options dialog box, click the Advanced tab.
Under the Virtual memory section, click Change.