5970 second gpu DOESNT WORK

[yarden modan]

I have this weird problem. during benchmarking of my 5970 i noticed that Gpu2 Usuage is 0% while the first gpu reaches usually 99%... the pc recognize the second gpu so i dont think it's dead or something... I reinstalled amd last drivers and it still doesnt work. Could it be during insufficient electric power? (I have Thermaltake litepower 700W)
HELP

 

[EarthDog]

Did you enable crossfire?
Does this happen in games?
Was it working before and quit?

 

[ATMINSIDE]

Crossfire bridge installed?
What driver version?
What's the rest of the system?

 

[EarthDog]

5970 is dualocated gpu on a stick. No bridge required.... Unless he has two 5970s????

 

[yarden modan]

Guys i figured this out, i had to play the benchmark on FULLSCREEN in order to activate the crossfire, thank you for fast response anyway