Replaced the G550 motherboard. Won't boot black screen and high.

I replaced the motherboard in my Lenovo G550 laptop cause the old one was fried. It's the exact same model of the motherboard with a new processor. I carefully put it back together and double checked all the connections. Now when I turn it on, it made all the right noises, I hear the fan and hard drive starts, but after 2-3 seconds, the HARD drive and fan go quiet and the hard drive light turns off. The laptop stays just slowed after this point and the screen is completely black, no display at all. Any help much appreciated.

Thank you

THE FIXED! .. After leaving the laptop running for about five minutes, I noticed that the right part of the palmrest botton was really hot. That's where the USB slot Council separte connected to the motherboard. So I opened the laptop again once disconnected the cable flex of the USB card, turned on again and it starts without any problem. Everything works perfect now just need to find a replacement USB Board now on this side. Can't believe that the USB Board was causing the problem.

Tags: Lenovo Notebooks

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