Question My motherboard doesn't work with AMD cards.

[bfc76]

Hi everyone. Today while I was replacing my i5 4690k CPU fan in my Asus H81m-e , when I started it again it wouldn't boot with my Rx 560 ,then my rx580 ,the r9 270 and hd 6950 none of them boot , then I tried a low profile Nvidia one and it worked then tried gtx 750 also worked , the AMD's where working fine before but now they only work in other PC's. I've removed battery, reset CMOS/dram. And nothing seems to work. Anyone has any other solution?

 

[COLGeek]

What PSU make/model are you using?

 

[Imperat0r]

Based on what you described earlier, those AMD cards needs an extra connector 6 pins.
Your Nvidia low profile doesn't need any additional power so that was the cause that allowed your system to boot up.
As @COLGeek asked earlier it is adviced to inform us about your PSU make and model.
We suspect the PSU or the PCIe cable from PSU