hd 4890 x2

[Promet Junson]

No input signal on screen.With hd 4890 it boots up fine (broken card).
PSU IS 650W chieftec. Maby i just need a new psu .Any thoughts on how to fix it ?

 

[Tradesman1]

What PSU do you have, for a full sytem and the 4890's in XFire would suggest at least a good 600 PSU as minimum since I'm not sure what all you have......