Lenovo Power Problems

[Vizavis]

I have a Lenovo G50-45 that is only a few months old. It operated fine until recently. Three times I have found that the battery power is at less than 10% even though it is connected to the adaptor and plugged in to the wall. Then it shuts down and won't start up at all and the battery won't take a charge. I fiddle with it for about 20 minutes by changing wall outlets and plugging and unplugging the adaptor to the computer over and over again and it will FINALLY begin to take a charge. I can take the battery out now that it is fully charged and t will run off house current just fine! I don't know if it's the battery, the charger or something more serious. Maybe the BIOS? I am really bummed out and I don't think I would recommend a Lenovo to anyone. Help would be really appreciated

 

[Vizavis]

Update:
It was the power cord.