Can video cards on notebook computers be upgraded?

I have an old ATI Mobility Radeon card that is freezing up; was wondering if you can even upgrade these adapters on a notebook computer.|||if it is not a motherboard attached graphic card then it is possible. go to ati.com and find catalyst control for your graphic card. Maybe too much heat from your laptop is destroying your card. get one of those cooling fans that placed under your laptop|||Generally speaking, no. I can't speak to all laptops out there, but I know of none that have upgradable video.|||No, and very few newer laptops has this option, even if they can, they are limited to what the laptop manufactures allows.|||Depends on your motherboard, sometimes it can and sometimes it can't.