Hi scottj313,
Based on the information you've provided there are 2 possible causes for your system not to run with the charger:
1. Your AC Adapter is defective:
-> If the light for the charger is no longer illuminating chances are AC Adapter is defective.
- You may try using another charger if you have any.
- Or you may use the charger with the other system (Y410)
2. The DC In is defective:
-> The port as to where you are plugging in your charger might be also defective. And if it is, your system will also not charge. This port is built in to your motherboard.
Now the fact that the system lost it's power completely is because there's no power coming in. Also, the incident prior to this that your system intermittently shuts down is probably caused by a defective AC Adapter. Seems like when it was moved the power stops flowing.
For hardware issues with your machine I recommend you to contact Lenovo's Tech Support. You may contact them at this number1-877-4Lenovo (1-877-453-6686).
Hopeit helps.
Thanks for using Fixya