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I have been trying to extend my display across 2 monitors in Windows 8.

The key on my laptop, which performs that function doesn't seem to work anymore.

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up vote 2 down vote accepted

If you were to refer to cnet's detailed description of the process here, you will find everything you need.

Try a Windows + P to bring up the options to extend display. If you are presented with the following error, (re)install your GPU drivers.

Error

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