Use the following steps to provide Windows with the resolution setting to match for your monitor, projector or TV:
Turn on the monitor or TV.
Turn on the notebook.
When Windows opens, it should find the monitor(s) using Windows Plug and Play process. Give Windows extra time to start up while it installs the necessary files for the monitor or TV.
NOTE:Most monitors work fine without installing any software by using Microsoft’s Plug and Play. However, if your monitor came with a software installation disc, you should install any drivers related to the monitor to get the best experience.
Once Windows has finished Plug and Play, from the Start screen, select the Desktop .
Windows 8 Start screen
Right-click anywhere on the Desktop screen and select Screen Resolution to open a Display Properties windows.
If Windows is in an extended display environment and more than one monitor is active, select the monitor to adjest from the display dropdown menu. Use the Detect button to find out which number represents each monitor.
Set the Resolution slider to match the default resolution of your monitor. In a presentation environment, choose the best display setting that meets your needs for both monitors.
For LED and LCD displays, refer to the box, user guide, or product specifications to find the native display resolution.
For older CRT monitors (the viewing area is a large glass tube) the display resolution can be set to whatever looks best – a good resolution for CRTs is 1024 x 768.
Display Resolution for a single display (notebook lid closed)
Display Resolution for multiple displays (extend these displays environment)
Display Resolution for multiple displays (presentation environment)
Click OK .
The display resolution in Windows 8 is now set.