Why did I only have one GPU when I dug mine in 7990?

[budong]

Very strange.

Is the driver version I'm using wrong?

I tried to replace it, but it didn't solve the problem.

I also changed mining software.

[rdluffy]

I did't understand your problem...

[dongle]

7990 is a dual core graphics card,

Do you have only one core job when you dig?

I have had similar problems before, but I forgot how to solve them.

[Fastmartin]

7990 is a dual core graphics card,

Do you have only one core job when you dig?

I have had similar problems before, but I forgot how to solve them.

I think one GPU is dead.

[edwardceng]

Are that card recognize as dual GPU on Device manager? Which driver are you using? AMD HD series may need old drivers, version 16 below I think. What coin you are mine, and which mining software have you tried?