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04 Feb 2013  
Saurabh A

Windows 7 64bit

Hi Mazz,

The 'external display' does not seem to be supporting the 'graphic drivers'. Please follow these steps:
- Boot to 'Windows' in 'Safe Mode'
- Access 'Device Manager' and expand the category 'Display Adapters' > Right click and uninstall the 'Video Drivers' > Follow through with the uninstall process > Restart the unit
- Click Acer Support: Downloads & Support Documents - Notebook, Ultrabook / Aspire / Aspire 5332 to 'Download and Install' the appropriate 'Display driver' for your unit
Note: Please filter search results by selecting the 'Operating System' installed in the unit. You may also want to check the system configuration in detail; it comes with an optional 'AMD' graphics adapter. Uninstall and Re-install the driver that is applicable to your system.

Hope this helps.
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