btw im using windows 7.
You will need to DDU your drivers: http://www.guru3d.com/files-details/display-driver-uninstaller-download.html
And then install Blockchain drivers: pute-Release-Notes.aspx]http://support.amd.com/en-us/kb-articles/Pages/Radeon-Software-Crimson-ReLive-Edition-Beta-for-[Suspicious link removed]pute-Release-Notes.aspx
Should get you 24,5mh stock.
i have done DDU and install blockchain driver.. now seems like cant even start..