Acer Aspire 4339 4739 4739Z Notebook Series Service Guide
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... may reduce display brightness. 2. Refer to Maintenance Flowchart). 11. Check the display resolution is listed under Other Devices 7. Run the Windows Memory Diagnostic from the operating system DVD and follow the on the desktop and select Personalize Display Settings. Disconnect power and all.... Click and drag the Resolution slider to its highest level. Click Apply and check the display. Roll back the video driver to Online Support Information. 8. Remove and reinstall the video driver. 6. If the Issue is still not resolved, refer to the previous version if updated. 5.
... may reduce display brightness. 2. Refer to Maintenance Flowchart). 11. Check the display resolution is listed under Other Devices 7. Run the Windows Memory Diagnostic from the operating system DVD and follow the on the desktop and select Personalize Display Settings. Disconnect power and all.... Click and drag the Resolution slider to its highest level. Click Apply and check the display. Roll back the video driver to Online Support Information. 8. Remove and reinstall the video driver. 6. If the Issue is still not resolved, refer to the previous version if updated. 5.