no opengl after removing driver and reinstall driver

[carlo_0000]

hi
have a big problem on my ring  running win7

i send back a dead sapphire rx470
 i got it back today  so i add it back to my ring but i get blue screens,
 so i removed the driver, and reinstall the last one
but now have a big problem , the drivers stays in vga, no opengl
i did a amd clean driver tool a few time, tried old driver but nothing

i m out of ideas  something i can do , or i need to make a fresh windows install again

i m gonna do a fresh install gonna lose less time 

[1715108532]

1715108532

[1715108532]

1715108532

[carlo_0000]

i found the problem

the pci port on the motherboard is broken

the rx470 what i send back , smell burn but was still working (but unstable)

so it s actually strange that something happen also to the pcie port (because gpu was still working when i send it back)
now if i put there a gpu, amd driver won't start

i tried installing win10 but only blue screen and reboots

back to 7 but each time i try to install that gpu on pice3, all gpu stay in vga, or bleu screen
i change power rise few time, switch gpu's

also if i disable onboard gpu and a gpu is connected to the broken port, the pc won't boot  unless i unplug it or activate intel onboard gpu
 

motherboard is an asrock b85 anniversary, had so much trouble with that board, before i used rx470's  i put 6x 380 on it but only 5 could run stable
still on warranty but can't send back i don't have an other one