Laptop fused out?

I have a laptop that's brand new, use to run perfectly, had no problems at all. It's a normal laptop, not a gaming one. It's a Lenovo Dolby, bought from Best Buy.
I was in the middle of cleaning out my bunny cages then my dad came in and told me to go to the park with him to run a mile or two. We were gone for four hours and the bunnies were running freely around my room. I came home and they chewed the laptop charger in half so interior wires were exposed. I told my dad and he opened it up and inspected it and connected wires. It worked perfectly for the laptop, it charged just fine for a few weeks. (The interior wires WERE exposed. At times they would make sparks or clicking noises.) I was laying on my bed with my laptop in my lap, then when I moved a little to switch p osition, one spark and click sound made the laptop shut down. No warning or anything. Screen went black and it didn't turn back on since.
We got a new charger for the specific kind of laptop. The light on the charger block works and it turns on, however, the laptop doesn't do a thing.
One thing for sure is that it's something up with the laptop, NOT the charger. Did I fuse out the laptop or what?
Please respond as soon as possible. I've been trying impatiently to fix this for two weeks now with no positive result.