New Computer won't boot up

Posted by Reggie on Super User See other posts from Super User or by Reggie
Published on 2012-10-10T03:22:09Z Indexed on 2012/10/10 3:40 UTC
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repair

I brought new components and put a computer together. I installed win7(32bit) and everything was working as it should. However my case came with two USB3 front ports I could not connect because of motherboard did not support USB3, so I swapped out the board for a new motherboad with USB3 connection. Now I put everything back together but it won't bootup. "Memory Ok" light stay on. Motherboad LED is on. There is power, all fans are on but I got no display.

There is no activity in back of the systems, none of the peripheral connection in the back are working.

I have tried the following but to no avail. Reboot multiple times Unplug power and plug the power back Reset the CMOS battery..let it stays out for 10 minutes or more. Unplug all peripheral device but no luck Reset memory..... nothing happen The only thing I did not do was remove the cpu...but I unplug everything else.
Please help, thank you.

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