Drivers are programs that hook directly into Windows and control the essential tasks of communicating your instructions to a hardware device and then relaying data back to you.
To know what hardware drivers are installed on your computer and to view their details : Rt-click Computer > Manage > System Tools > Computer Management > Device Manager.
Back up Drivers in Windows 7 | 8
While Windows 8, Windows 7 and Vista offers the plug and play feature, you might want to backup some installed drivers, if you don’t have the Driver CD that came with the computer or they are unavailable online. This comes in quite handy if you purchase a computer and want to backup the initial set of drivers. It can be quite difficulty for example to find drivers for hardware installed in a notebook if the operating system has to be setup again.
Double Driver is a very simple and useful tool which not only allows you to view detailed information of all the drivers installed on your system but also allows you to backup, restore, save and print all chosen drivers simply and reliably.
It analyzes your system and lists the most important driver details such as version, date, provider, etc and offers you the chance to update to the latest version. All drivers that are found can easily be backed up the application and easily restored at a later point in one go.
These links may interest you:
Search For And Update Windows Drivers, Remove Unused Device Drivers From Windows
How to identify or verify unsigned / signed drivers in Windows 7 & Vista
How To Uninstall, Roll Back or Update Drivers
How To Troubleshoot Driver Problems in Windows 7 & Vista.