need help laptop connecting to tv

i recently rebooted my sony viao vgn-c150p and am no longer able to set up connection between laptop and tv (samsung). it will only show for 2seconds upon computer start-up and than displays message on tv check signal cable. i have tried everything i can think of. any help will be appreciated.

 

I'm afraid you've posted this in the wrong forum category. This category is designed to allow users to make suggestions as to content they would like to see changed here on Afterdawn, and leave feedback about the site.

The help you in your issue though, check your display settings by right clicking on your desktop and going to properties. From here, go to the Settings tab and ensure that your secondary monitor is enabled (sometimes they can toggled off). If these settings look wrong to you, adjust them as need be. If it still does not work for you, find your laptop's function button (usually to the lower left of the keyboard near the windows Key) and hold it down and press the External Monitor Button (usually a little screen icon printed on the F10 button or somewhere along the top of the keyboard). This should tell your laptop to turn off video to your laptop screen and display it on the external monitor.