In the case that you require that your laptop make use of a specific display settings, disabling the possibilty for Windows or other applications to revert the changes made: Open ATI Catalyst Center by right-clicking on your Desktop > Catalyst(TM) Control Center.
Click on the Advanced button, to access all settings.
Go to "Displays Manager" > "Display Properties".
Edit your settings for:
Click on the "Force" button.
Click on OK to validate.
ATI Catalyst Control Center - Force a specific display settings
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