Go to Control Panel and double-click on the **Display **icon.
When the Display Properties box open, click on the **Settings **tabs.
Then, in the bottom-right corner, click on the **Advanced **button.
When the Advanced Properties box opens, there might be a tab there for your graphics card. There is on my computer, for my nVidia GeForce card.
Even if there’s no specific tab for the graphics card, if you click on the **Adapter **tab, it should show your graphics card’s name and information. If you then click on the **Properties **button, the Properties box will open.
In the **General **tab of the Properties box, there is a **Troubleshoot **button, which you can try. Also, in the **Driver **tab, it gives you information about your graphics card driver, along with buttons for updating, rolling back, and uninstalling your driver.
Find out what sort of graphics adapter you have, go to the manufacturer website and see if you can find and download the latest driver, and see if you can update the driver for you card.
ETA:
Well, while i was typing all that, you apparently moved on a bit.
If you want to find out which graphics card you have, without opening up the box, try the Belarc Advisor. It’s a small program that will scan your computer hardware and tell you what you have. It’s not spyware or anything, and it has really helped me out a couple of times.