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Is it my motherboard? I've got a Compaq Presario CQ62-219wm laptop that I'm working on. It has no power. I've tried the hard reset with no battery, no adapter, press & hold power button. That didn't work. I tested the power adapter it's getting power even tried a second adapter still no power. I changed out the power jack but still no power. There is an led on the power jack itself and I noticed when plugging the adapter in it there is no light that comes on. Any other suggestions? Or should I just replace the motherboard? Computer is no longer under warranty.