Hi there and welcome
Does it still power on though when you have the power cable disconnected?
ok, disconnect the power cable, hold the power button down for 60 seconds then release.
Then connect the power cable and power it on, disconnect the cable and tell me how it then functions please.
Which model Lenovo do you have Vince?
It is the internal battery that has faulted.
I am really sorry about this and you are going to have to return the Lenovo to have this replaced. It is a fixed battery so they need to disasemble it for this. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the page, then submit, that would be greatly appreciated.