Hi wanda,

 

Welcome to the Community Forum.

 

Have you tried Windows update to see if your computer has a video hardware update?  Here is how to change your computers resolution,

 

To change your screen resolution

1. Open Screen Resolution by clicking the Start button , clicking Control Panel, and then, under Appearance and Personalization, clicking Adjust screen resolution.
   
2. Click the drop-down list next to Resolution, move the slider to the resolution you want, and then click Apply.

Please go to Microsoft Community here for Windowss 7 http://windows.microsoft.com/en-us/windows7/change-your-screen-resolution

 

For Windows 8 go here http://windows.microsoft.com/en-us/windows-8/get-best-display-monitor

 

If you are having problems with a new computer then the you should have a years warranty with the computers manufacturing.

 

 

Hope this helps,

 

Best Regards,

 

 

 

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