Gpu fan spins but no display

[ishmamm50]

When I turn on my pc using gpu the pc turns on and gpu fan spins but the display do not come but when i connect the display with the motherboard pc turns on and shows display
N.B : I do not have gpu drivers installed in the pc.
Please help

 

[Doseq]

Black screen or no signal ?
Make sure that your GPU is connected with proper 6,8 power pins if necessary (plug is on the top).
I guess that you can also check this:
https://www.youtube.com/watch?v=3rfe0jYSpUg

 

[ishmamm50]

says input connection and my monitor goes to the sleep mode and its getting power since the fan is running as it ran on my old motherboard