My system display is not coming

[ismail_37]

Hello,my system display is not coming, i have check RAM, when i start the computer one long beep and two small beep sounds are there what is the problem

 

[soest009]

This is most of the time a video adapter error.
Try to take out and reseat the video card in your system.
If that doesn't help try onbaord video (if you have it) or another video card.

 

[jsc]

If it is newly built system, did you connect any 6 pin PCIe power connectors?