How to increase dedicated video RAM on a Lenovo PC?

How to increase dedicated video RAM on a Lenovo PC?

If it's a desktop: get a better graphics card, for example the ATI Radeon HD 5750, which gives decent performance for a low price.

If it's a laptop: In most cases impossible. Most laptops these days have either shared video memory which is basically part of the CPU; and others have a dedicated video chip which is usually soldered to the motherboard.