Hi, welcome to Just answer
Have you tried to use a different cable, also have you tried to remove all the cables and then reattach them ?
yes i had thank you
forget it if it took that long ,i said i had tried everything i could think of
Thank you for rating it as Poor service even when I am still alive and helping you
If you have already tried to leave it unplugged as well and still it wont display anything then the problem is with the power board that will need replacement