I have a lenovo Flex 2 laptop that has been fantastic so far. However, the other day when I shut it down and restarted it, the computer seems to be stuck in a cycle and was unable to boot. I would push the power butto,n the keyboard lights would turn on for a brief moment, the fan would spin and then it would stop. It would try to boot for about 5 seconds and recycle over and over and over. Eventually, the computer would boot. I bought a new battery thinking that was the issue. I replaced the battery, and the problem persists. Well, last night the computer got stuck in the boot cycle but will not turn on anymore. The battery seems to be able to hold a charge when it was on. However, I noticed that if I unplug the battery and plug in the AC adapter, the indicator light that shows that the AC adapter is plugged in will not turn on without the battery connected. This may not have a bad AC adapter? Is my mother board the major issue? What is the next step for me in this stage? Thanks for all the help and advance!