This problem happened to me a while ago where I could plug in my laptop and the led light would turn but when I go to turn it on the power light flashes for a second and goes away. I've tried removing the battery and holding down the power button and putting it back and it didn't solve the problem. I ordered a new mobo and installed it, plugged it in without battery and turned it on and it worked again. However when I put the back casing on and put the battery back in to charge it up the problem came back. Is there anything I can do to fix this?