help =( My screen doesn't display!

there are many reasons why your screen does not display, go through this steps before you think it's a motherboard problem
try your monitor cable.
if that doesn't work make sure your ram is in the same color slots ( if you have 2 sticks of ram )

make sure your video card is plugged in the right way, make sure its flat because most of the time it looks in but the tail is not in all the way

if all of this fail, it might be a motherboard or video card, you can buy a new one and replace it or if you don't know how to, buy the motherboard and  bring it  to any computer repair store and have them install it for you

heres a video on how to install any monitor

 

 and heres a video on how to install a motherboard