Chosen Solution

Hello! My laptop is a couple years old and now it won’t stay on unless it’s plugged into the charger. I was wondering if anyone knew what the problem was.

Matthew Fajardo, I’d start off with a new battery.

My T520 is beat to !&&* and it is two generations newer than yours. Its battery died two years ago. Your laptop needs a new battery.

I think your first step should be to buy a replacement battery as it sounds like your charger is still working. Here is a link to the battery replacement guide: Lenovo ThinkPad T500 Battery Replacement And if anything else pops up, here is the link to the general troubleshooting page: Lenovo ThinkPad T500 Troubleshooting