Move up to Windows 8.

Check to see if your PC is compatible with Windows 8.

Compatibility list

Follow the Instructions for Upgrading Your PC to Windows 8.

Installation Instructions

Windows 8 Easy Transfer
Windows 8 Installation Instructions
Upgrading from Windows 7 to Windows 8
Upgrading from Windows Vista to Windows 8

After You've Completed Your Upgrade, You'll Need to Update Your Drivers.

Update Drivers

Additional Resources.

Upgrade to Windows 8
Windows homepage
Windows 8 Compatibility Centre