If your Keurig is unable to turn on, you may need to replace your power cable with this guide.
Access the bottom of the Keurig by flipping it on its side.
Remove the five 13mm Phillips #0 screws securing the bottom case.
Pull the silver cover off of the device.
To remove the power cable, highlighted in red, follow iFixit's guide on soldering.
The ground cable, highlighted in orange, needs to be re-soldered to your new power cable.