Laptop Busted

About a month ago my dad wanted me to go with him to the park for a run and all. I came back and the bunnies chewed the laptop charger. My dad interrupted me while I was changing the bedding for the cages, so i couldnt put them in. I let em run around for the time being.
My dad fixed the cord, dissected it and put the matching wires together.
About a week or two later, I was laying on my bed spending time on my laptop, then I moved to another position and it stopped working. It completely shut off, no warning or anything. I even got a new charger and it won't charge. It's an expensive laptop and it's brand new, I don't want to waste anymore money. Please respond as soon as possible.
The laptop is a Lenovo.