Battery/charger failure?
"There is a problem with your battery, so your computer might shut down suddenly."
Gonna buy a new one soon.
My dad got mad at me because after I saw the message I took the battery out and blew the dust out and put it back in
He's like "Tell me why did you take a perfectly good battery out of the computer!? There was no error message until you took out the battery!" He wont listen to me. :I