No Picture on Monitor

[Markech]

I just build a computer and when I turn it on, no display shows up on the monitor. The monitor is brand new and works fine with other computers, but nothing shows up on it when it's connected to my new computer.

 

[eob2000]

Do you have a built-in or external GPU if it is external try reseating the card.

 

[Markech]

Do you have a built-in or external GPU if it is external try reseating the card.

I fixed it, I was being dumb and forgot to plug in the CPU power connector. Everything works now, thx for replying and trying to help.