Nano pi 2 fire

Hi there,
I put HDMI cable and internet cable and SD in nano but display noting .
Also I think maybe it occurred coz adaptor which I used is 5 voltage 2
adapter.

Sorry I used adapter 5 Voltage 1.5 amps

The Wiki page should tell you the minimum requirements for the 5V supply.

Do any of the LEDs blink?

Yes LEDs blinking.

Which ones and at what rate?

You will find that a PSU-ONECOM serial interface board will be very useful.
 You can watch the bootup messages and most likely determine what is going
wrong.

as matter of fact when I look again to the LEDs both(blue and green)is on
but not blinking why?

my adapter is 5v 1.5a do you think this problem is related to my adapter ?

if I did not use of SD it can cause of the display problem,by any chance?

From the Wiki page:

   A 5V/2A power is a must

so yes it could be due to the adapter.