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first try updating your drivers at www.ati.com, I have to ask you to double check the connector your using to goto the tv, if your using a S-video cable check the port on the card your connecting to, if there are more then 4 pin holes in the connector you need a pigtail to connect to your tv, many video cards use a cable that is sold seperatly to connect to a tv, connector look like a s-video connector and a s-video cable will plug into it, but instead of 4 pin holes it has 7, 9, or 12 connectors depending on the card, and the type of output the cable has. most are 9 pin with composit, s-video, and componite connectors on them.
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Your computer is set to extended display. That means that your desktop will extend to the other screen. I think what you want to achieve is to clone your display. That means that you are going to copy what ever you have on your portable system to the TV.
The path to the display settings differs from one OS to another but you have to get to the same option whether it is XP, Vista or Win7.
Right click on the desktop screen then go to Graphics option. Look for an option to clone your display. That should show the same thing on your TV as you have on your portable system
First off ensure it is a good quality cable as many cheap cables are not worth the material they are made from.
Second you will have to make sure you tv is set to the correct input eg video 1, input 1, etc.
Third you need to call up the display properties for your graphics card on the computer
You can right click on an empty area of your desktop and if there is an option for Nvidia or radeon you should use that. If not click on properties. setting, advanced, you should then see a tab for your graphics card, select this. Options may vary a little from here on but you are looking for an advanced control panel just for your graphics card and it is in this area that you can select additional displays and their properties. Usually it is best to select "clone" until you have established a picture. after that you can select expand or other options, Clone is usually best.
If your graphics card has a digital output then a lead from that to your TV if it too has hdmi etc is a better option than S-video, Some TV's also have a VGA input this too is better than S-VIDEO.
Have you tried to lower you laptop's screen resolution to 800x600?
Have you tried one of these:
1. You need to manually enable video on tv by pressing two buttons on your laptop keyboard. The first is "Fn" (at the left bottom). The second depends on your laptop manufacturer. Look at the function keys. F1....F12 for the LCD/CRT or the corresponding sign. Press and hold Fn and press second button. Sometimes you need to press second button several times. This means you need to cycle through all available options to enable Laptop's screen and TV screen at the same time (clone). 2. Intel Extreme Graphics video cards sometimes doesn't support a procedure described above. You need to find intel video card options manager running at the sys-tray (right bottom of your screen near the clock). Right click on it. Select Graphic Options -> Output to -> Laptop + ... clone (or something similar) Note that not all video cards are capable of showing the movie on media player at the same time. You need to choose then,- Laptop or TV
You must redirect the video output from the laptop screen to the TV.
It usually takes a keystroke combination, depending on your laptop it is hold the FN(function) key(lower left on keyboard close to the Ctrl and Alt key) and press on of the F1-F12 keys on top of keyboard.
You can try one combination at a time until it switches.
Your FN key may have a Flying Windows icon and the F1-F12 key may have a TV icon on it.
Let me know if you get it working and please rate this solution.
This happens to almost every laptop I know. Here are several solutions: 1. You need to manually enable video on tv by pressing two buttons on your laptop keyboard. The first is "Fn" (at the left bottom). The second depends on your laptop manufacturer. Look at the function keys. F1....F12 for the LCD/CRT or the corresponding sign. Press and hold Fn and press second button. Sometimes you need to press second button several times. This means you need to cycle through all available options to enable Laptop's screen and TV screen at the same time (clone). 2. Intel Extreme Graphics video cards sometimes doesn't support a procedure described above. You need to find intel video card options manager running at the sys-tray (right bottom of your screen near the clock). Right click on it. Select Graphic Options -> Output to -> Laptop + ... clone (or something similar) Note that not all video cards are capable of showing the movie on media player at the same time. You need to choose Laptop or TV
The problem might be related to your native screen resolution. The C702TU laptop has a resolution of 1280 x 800. Most projectors do not support this resolution and if you cloned the main display, your projector cannot sync at this resolution. Look for an option to output a second display )instead of cloning) within your display settings. If your projector is plugged into your VGA port and turned on, Windows usually detects the second display automatically. Change the resolution on the second screen to something like 1024x768 or 800x600. These resolutions are supported almost universally across projectors.
Normally you have to open Control Panel, then open Display. From the Display properties dialog window, choose Settings and then Advanced. Your video card should have features available for all potential external displays. This includes TVs. That may be listed as a choice or you have to find the button to 'automatically find/detect TVs'. Once you get to the TV property sheet, you want to choose 'Clone' or words to this effect. Once your TV is found (your S-video or HD cable needs to be connected and active) then you can see your desktop on the TV. You can set parameters for the TV display. These are normally 60Hz unless you have a HD TV and then you can set a higher refresh rate and video display size 800x600 and 640x480 are common for an analogue TV. Use higher displays for your HD Flat Screen to accommodate a 16:9 width. Once you have activated Clone mode set your TV to the input line your HD cable or S-video cable input and you should see your desktop on the TV..
Some things to be careful about is how the display on the TV screen performs. Does it stretch your video out of proportion or not, and if it does you need to hunt for a property value you can set to modify what you see now to what you want to see.
Many video players on your PC or Laptop can clone your display adequately. But, there are some players that are preferred. Once in VLC media player and the other is Windows Media Player classic found after installing the K-Soft Full Codec package. Both of these are free and can be found in the Multimedia section of http://www.majorgeeks.com/. You will also want to ensure you have the latest Codecs available. Once again, the preferred program is K-Soft Full.