Computer laptop black screen

My laptop connected to my TV via hdmi, after having disconnected I now have a black screen on my laptop and cannot reconnect to tv to the external display change settings... can someone advise

Thank you
Andy

Just a thought...

* Proceed at your own risk *.

Maybe you can restart your system in Mode without fail and make
a system restore to a time before you made the changes.

Windows Vista - start your computer in safe mode
http://Windows.Microsoft.com/en-us/Windows-Vista/start-your-computer-in-safe-mode Windows Vista - tools of diagnosis to use in safe mode
http://Windows.Microsoft.com/en-us/Windows-Vista/diagnostic-tools-to-use-in-safe-mode

Good luck...

Tags: Windows

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