Hi, I'm writting here because I'm out of ideas in my troobleshooting :
I am using an old low consuption mobo from an hp microtower ( hp dx 2200 ). I was mining with an R7 370. A friend gave me his msi R9 270x ( working ) because he upgrade his gpu.
Both gpu are plugged in with tested risers. The rig is using claymore under windows.
Everything works fine until claymore starts. Just before hashing starts, the computer freezes and shuts down. It does the same using a other OpenCl program ( hashcat ). The R9 is running on its own psu. I manually installed the following drivers trough device manager : 14.4 (recomended by msi) ; 15.12 ; and 16.11.
If I let only the r9 in, I get a black screen when the login page would normally show up. It does the same on other pcs exept on my friend's computer. It looks like a driver issue.
Thanks for help, and sorry for my poor english, i'm a french student and I'm pretty exhausted