Monitor says no signal.

HI all.
Ok so built a new comp and I can not get the monitor to work.
It will say no signal,computer will stay on but no screen image. I get three long beeps aswell.
I have tried another working card and the same thing happens.
Its a evga 260gtx card and I have power going to it as well. Here are my specs.
700 watt ocz
Msi p55m-gd45
corsair xms3
i5 750 lynnfield
segate 500gig.
2 answers Last reply
More about monitor signal
  1. Be sure the card is firmly and properly seated in the slot, and that the power cable(s) to the GPU are properly connected.
  2. Yes I tried all that,even tried the g card in the other slot, but notta :(
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