Getting the new drivers:
What you should now do is to find out if there are newer drivers available for your card. If there are, you can download them to your hard drive for installation.

Nvidia: These use an all in one driver which covers all models. Get it here- just pick 'graphics driver', and the operating system which applies to you.
NVidia website

ATI/ Radeon: These are also all in one drivers, so to get the ATI (Catalyst) drivers you can go here. Just select 'Drivers and software' and choose your operating system, then click 'drivers and software' again:
ATI Website

There are a different set of drivers you could try also, called Omega drivers. You can get those from here:
Omega Drivers

Intel: You need to get the correct driver for your chip.
Intel Website
Start by clicking on 'graphics', 'Desktop graphics controller'. Follow the on screen instructions, putting in your chip version and operating system.

S3: Go to the website:
S3 Website
Start by selecting your graphics chip and follow the on screen instructions.

SiS: Go to the website:
SiS Website
SiS have a little piece of software which diagnoses your system and downloads the correct drivers. You’ll need to use Internet Explorer to do this, and you may have to click on the security bar to tell Windows to allow or install an ActiveX.

Once you have downloaded the drivers to your computer, you can move on to the next step.