I put the new upper screen in an it won't power on blue light just flashes for a second

Hello all ok I got it together I hit power button light comes on lower screen flashes then powers off anybody know what I could have done wrong

OK so I got the upper screen and hook everything back up hit the power button an the bottom screen flashes then the power light turns off anyone know what I could have done wrong

The upper LCd ribbon when u put it in does the contact side of the ribbon go towards the motherboard or does the contact Side face up