Laptop only works when plugged in?

I got a LENOVO 0679 and it says it's charge is 99% but only works if plugged in. If I unplug it, it shuts off. Any ideas?

Guest

Either the battery is damaged or the charging circuit is damaged. If it is under warranty, try calling Lenovo.
If it is the charging circuit instead of the battery then the motherboard probably needs to be replaced.

tumbleweed_biff