Quote from: otto_diesel on March 29, 2017, 11:06:23 PM

bro, its about your drivers,

install 16.11.2 driver,

if it not fix; try

first close the automatic ''driver update'' (and also windows update on windows) (there are videos on youtube about that, its easy)

download the ''16.11.2'' here:

http://support.amd.com/en-us/kb-articles/Pages/Radeon-Software-Crimson-Edition-16.11.2-Release-Notes.aspx

16.11.2 is important, do not use timely new drives on rx470 and rx480,

   if it not fix; try

   restart and install DDU, (you can delete the drivers with this program). delete drivers (close the driver update, (i m not talking about windows update, driver update is a diffrent thing. ) restart and install 16.11.2

   dont change the riser socket position everytime on mobo,

   sorry about my english Cheesy

if you have headache again fell free to asking here or PM

Man i really appreciate your reply but i tried that and nothing :S, in fact the problem is not the 5th GPU, the issue is the pcie x16, when i use my 4 pcie x1 everything is fine.

my mobo is Asus Prime H270 PLUS

5x Asus Strix RX 480 8 GB

4GB RAM

Celeron CPU