Please note that some laptops, such as Sony VAIO, Toshiba, Dell, HP, Alienware and etc., might have customized drivers.

Therefore, you might want to check the manufacturer's website as the source of the latest drivers available.

For all the other cases, identifying your graphic card name can be done via Device Manager

To launch it, go to Windows Control Panel - System and Security - System.

Else, you can press Windows+R key and type in 'devmgmt.msc'. 

Click Device Manager option at the left side of the window.

Name of your graphic adapter can be found under Display adapters category.

Once you know the name of your graphic adapter, you may search for suitable drivers.

That can be done at each manufacturer’s website:

Use selection tools or search box to find latest drivers for your adapter.

All of these manufacturers also offer utilities for automatic driver detection and download.

After you have downloaded and installed latest drivers, you may need to reboot your PC.