I huck up a lap top to the tv and the sound does not work at all

You have to have an HDMI, DVI, HD, or RGBHV input on the back of your tv. Get the proper cable to go from your computer the tv, plug into your tv, select the right input that matches where you have plugged it in. Lastly you will have to hit function 4 on your computer to change it to remote viewing monitor.

Check your ports on the lap top see if you have s video or hdmi or dvi or VGA the best is hdmi if you have that get a cable for either one of you connections also match connections from the lap top to what you have for your TV more than likely if they are both fairly new you should have hdmi connections for both get a cable that is long enough. I get my cables at amazon.com their prices are the bomb.
Connect them together both ends to lap top and to tv then make sure that you have a line in jack stereo jack with RCA ends hook that to the back of your tv and your lap top in stereo jack even better to your surround sound system. Set your TV to AVI 1 or 2 or DVI or whichever is your connection start a movie on the lap top and turn your sound on and see if you have a picture on your screen you should have the same thing as what is showing on your monitor on your lap top. Adjust settings and have fun!

Did you use the combination keys of your laptop Fn and either F5, 6, or 7 depends on brand to select internal/external/both? You also need to make sure that the video resolution feeding the monitor is at native resolution setting.

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

does the pilot light go on?if there are no lights on,check plug,if your on a power bar,maybe you turned it off by accident,if it's new and none of the previous works ,run back to the store and RETURN IT

Sounds like the monitor. Do you have another monitor to hook up to the laptop? If so, that will tell you precisely if it's the monitor or video card.

All you need to do is plug the video cord in and right click on an open space on your desktop. On the pop up menu select the Intel TV wizard. Then follow the on screen guide to use your TV as your second monitor.

right click an open spot on your desktop go to properties, then click settings and click monitor #2 then at the bottom select enable desktop sharing and hit apply

Hello there. You sound very frustrated. try this, go into your BIOS settings and cycle the settings for your vga adapter, or even reseting the options to basic performance. also, you could hook up the external monitor and disable it while it's hooked up. that should fix any problems with that(if you still have an extra.)

refresh rate, likely
try to adjust to a compatible rate. the monitor manual will give you its compatible rates. the video card should have that rate available. if not, you may damage the monitor with the wrong rate.
stop and try another monitor that has a refresh rate available on your video card.
good luck
mark