mobo is z97 anniversary , i have tried on old p45 to jump it from 16x to 1x and it works fine with R7 240 but again R9 nano p45 doesnt see , and z97 doesnt see nothin (r9 nano and r7 240 )
The nano is new so it might need newer drivers. If the 240 doesn't work in the x16 slot without the riser it might
be a bad mobo. If it does work it's probably a bad riser.