Crossfire no signal

[jskshs]

Hello,
when i use one graphic card the system runs in perfect condition, but when i insert second graphic card i dont get any reception to monitor.
i use 970a ds3 motherboard, xfx hd7770 graphic card and coolermaster 600w. i cant even go into bios with two graphic card installed.

 

[Pinhedd]

Did you install the crossfire bridge?

 

[jskshs]

yes

 

[Pinhedd]

So you have two 7770s? Did you try the second card in place of the first?

 

[jskshs]

i did works in perfect condition

 

[jskshs]

i bought everything today

 

[Pinhedd]

If you haven't done so already, update your motherboard to the F4 firmware revision

 

[jskshs]

i tried installing exe version of f4 firmware but no use