07-01-2016 02:31 PM
Welcome to the Lenovo Community !
Have you tried clearing the CMOS? Sometimes a conflict with the stored information in the CMOS will prevent a successful boot up. To clear the CMOS just removed the round coin cell battery from the motherboard. The battery's socket should have a little tab that when pressed will eject the battery. Do this with the computer unplugged from the wall. Once the battery is removed press and hold the power button for 15 to 20 seconds. Then replace the battery, plug the computer into the wall socket and try powering it up to see if the problem is resolved.
07-02-2016 06:51 AM - edited 07-02-2016 07:02 AM
My error, the CMOS battery is not socketed on your model, but plugs into the motherboard as shown circled in red below. Is the battery laying somewhere inside the case? If the battery got disconnected that would account for the system not booting. .....
07-03-2016 06:34 AM
Another strange twist..... page #24 of your model's Hardware Maintenance Manual is showing the location of the RTC battery (also known as the CMOS battery) on the side of the motherboard by the USB ports. Any chance the battery is hidden under the wifi card? Here is a link to that manual for your reference....