added 2 gpu cards rig wont use them!!

[Mickspabtc]

hi so i am a noob to gpu mining, complete noob i bought a 4x XFX RX480 mining rig and the mobo had space to add 2 more so i hooked up my 2 nitro OC rx480s but it wont seem to mine with them they show up on msi afterburner but memory clock and core clock is just at zero is there something i need to install to get these 2 new gpus recognized....the 4 orignal gpus show as ellesmere where as the 2 i just put on dont im not sure if that is relevant as i said complete noob sorry if this is a repostdid look but couldnt see anything if any one could help or point em to a thread that could i would be most grateful!! 


thanks

[adaseb]

Use Windows 10 or Linux and see if it works then...

[Mickspabtc]

thank you i will try that later but dont have any usb sticks here atm :/ ...do you know the reason it is doing this or any other fixes i could try?the rig is currently on windows 8.1 64bit

[MantaMine]

Are they recognized in the device manager?

Almost guarantee that shutting your rig down and clearing the CMOS will fix your issue.

[Newwsr]

which windows you are using?
Windows always 64 bits

[Mickspabtc]

hi sorry for late reply computer crashed to haha....i upgraded to windows 10 and it all worked fine first time thanks for your help!!