No Signal To Monitor

my computer would not start so I had power supply checked. checked out fine. Then I installed new motherboard. The computer comes on, but there is no signal to moniter, and the power led's won't light up. I can't get to the BIOS because I haven't a working moniter. PLEASE HELP!!!
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More about signal monitor
  1. You've given almost zero information. We need to know:

    Your PC configuration, including make/model of psu if the PC is custom built.

    How old is the PC?

    How did you "check out" your psu and find it was fine?
  2. The title of this topic has been edited by Buwish
  3. This topic has been moved from the section CPU & Components to section Systems by Buwish
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