Is there a way to fix the screen on an old laptop?

Episode 944 (1:53:49)

Don from Mojave Valley, AZ

Don has an old laptop and the screen is dimmed down. Leo says he should check his settings, but it's likely that due to the age, the backlight is failing. It probably would be cheaper to just get a new computer. To be sure, he can plug the laptop in to an external monitor. If the image on the external display looks fine, then the laptop screen is just dying.