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No display on tv when laptop is connected with vga

When i connect my laptop to my lcd a no signal message appears on the lcd.
it has worked in the past and i think that maybe some settings hve been altered to prevent it from working now. but i don't know alot about this so am unsure where to look to fix the problem

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  • no clue...tj Feb 18, 2009

    i'm running vista home premium. when i hook it up the lcd just says no signal

  • no clue...tj Feb 18, 2009

    thanks for your suggestion but i can't get the computer to recognise the lcd at all so i can't change its settings...could it be anything to do with the vga port?

  • Anonymous Mar 08, 2009

    my lcd shows no signal when I connected to my laptop why can any one help please?reji

  • meganeh Mar 15, 2009

    I am trying to connect my laptop to my LCD TV but it just says that there is no signal. I have changed the source on my TV but don't know how to get my lap top to send the signal to the TV. I am using a VGA cable.

    Can any one help?

  • peeface
    peeface May 11, 2010

    is it xp?
    does the lcd show anything when it is hooked up to the tv?


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I dont know much about vista, im still on xp. see if this helps

http://windowshelp.microsoft.com/Windows/en-US/Help/c90105a0-57c1-4f0e-b095-b5ed1de8fc431033.mspx

Posted on Feb 18, 2009

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Why can't I find the connect to projector option?


Connect your Projector to PC Computer

Connect to projector

How to Connect Laptop to Projector

How to display computer image on TV or projector
How to display a computer image on a TV or projector All modern televisions and projectors have one or more ports which allow them to receive and display an image generated by a computer. Both desktop and laptop computers are capable of connecting to a TV or projector, provided that they have the appropriate cables. The following sections contain instructions for using your TV or projector as a computer monitor. For best results, we recommend reading them in order.
Identifying available connections
Connecting computer and projector or TV
Display using Desktop
Display using Laptop
I don't see an image on my TV screen

Identifying available connections The first step in connecting your computer to a TV or projector is finding an identical port on both machines. Once the matching port has been identified (one that is the same on both your input device and output device), you need the appropriate cable to connect them. This section contains a picture of the back of an Epson projector and its available connection ports; as well as descriptions of each.



find-connect-projector-option-vga-hdmi-zonwsocbr3qazne24mugrpvs-1-0.jpg
HDMI
The HDMI connection is very popular among display electronics. In fact, nearly all modern televisions and projectors feature HDMI ports. Most laptop computers support HDMI and it is becoming more prevalent on both desktop as well; even without a high-end video card. HDMI is quickly becoming the standard for all electronic equipment for its high quality signal and ability to carry both audio and video signals. The image to the right is that of an HDMI cable.


find-connect-projector-option-vga-hdmi-zonwsocbr3qazne24mugrpvs-1-1.jpg VGA
The VGA connection is the most common among both desktop and laptop computers, is found on most projectors, and some TVs. The VGA cable has a 15-pin connector on each end that plugs into a VGA port on each device. Due to the fact that most televisions do not support VGA, we recommend using HDMI for their wider range of compatibility.


find-connect-projector-option-vga-hdmi-zonwsocbr3qazne24mugrpvs-1-2.jpg Tip:VGA cabling is universal for devices that support it. For example, the if your desktop monitor that uses a VGA cable it, that same cable can be used by a laptop to connect it to a projector.
Note: If you are using an Apple desktop or laptop you need a VGA adapter to connect a VGA cable to the computer.

DVI
The DVI connection is newer than VGA and it offers a sharper image. Although the DVI port is not shown on the Epson model above, it is still somewhat common for projectors, not so much for televisions. It is mostly found among desktop computers for monitors, but some laptops have DVI connections as well (Apple laptops are more commonly known to support DVI than any other brand of laptop). Since finding DVI on a TV or projector is more difficult, we again recommend using HDMI cables.
Tip: There are special cables that convert from DVI to VGA or DVI to HDMI and vice versa.


find-connect-projector-option-vga-hdmi-zonwsocbr3qazne24mugrpvs-1-3.jpg
Composite Video
The composite video connection is quite common on a TV or projector, but it is nearly nonexistent on modern computers. This connection is the yellow female cable on what is normally a three bundle of red, white, and yellow. The only time you should see this setup is on older video cards for desktop computers.
S-Video
The S-Video connection is also commonly found on TVs and projectors, but solemnly on a desktop or laptop computer. This connection is a small step up from composite video, but is nearing obsolescence.

Connecting computer and projector or TV After you've identified what connections are available on both your computer and TV or projector, you're ready to connect the cables. If the same connections are not available for both the computer and TV or projector, you'll need to purchase a video converter cable that converts one signal into a compatible signal.

Desktop Computers For a desktop, you simply need to plug the cable into the computer and output device. If you don't see an image, you may need to change the display using the following steps.
  1. Press the Windows Key.
  2. Type Adjust screen resolution and press Enter.
  3. Find Display and click the down arrow on the right-hand side of the box.
  4. Select the appropriate output device.
  5. Click Apply then OK.

Laptop Computers If you're connecting a laptop computer to a TV or a projector you'll often need to "send" the video signal to the display device. The key sequence to do this varies depending on the laptop; but usually it's either: Fn + F3, F4, F5, F8, or F9. For example, pressing and holding Fn + F3 at the same time on my laptop sends the video signal to my connected TV instead of the laptop's screen. The corresponding key used with Fn may be labeled as CRT/LCD or have a picture of a monitor on or close to the key. Additional help and information with switching the laptop display can also be found on the link below.
Switching TV inputs Finally, if you're connecting a computer to a TV make sure it has been switched to the correct input. For example, if you connected an HDMI cable to your computer and the "HDMI 2" port on your TV, you'll need to switch to the "HDMI 2" input. This action can be accomplished by pressing the input button on your TV remote until the correct image is displayed.

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They both have to have the same type of connection such as VGA or HDMI or connect a cable between them otherwise you will need some type of interface between them to make the connection.

Once you have the cables connected, get the tv remote and press Select Input to tell it where the signal is coming from (PC, VGA, HDMI). Reboot the laptop and the image will appear on the tv.

The video will show on most systems when you reboot without you having to do anything. Some systems will require you to hit the FN (Function key) + F1 thru F12. Hold down the FN key then hit the correct key for displaying on the monitor (F1 thru F12). The correct key will normally have CRT/LCD on it or it will have the icon of a display.

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Once you get them connected with a cable you just turn the tv on and Select Input (Select either PC, Computer, HDMI) of where the tv should receive the signal.

On the pc if you just reboot it most times the image will appear on the tv. if not you can Press and Hold your FN function key at the lower left portion of the keyboard then hit the correct F1 thru F12 key that toggles the display. The correct F1 thru F12 key will have LCD/CRT on it or it will have the icon of a display.

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2 - When you start the laptop with an external device (such as an external monitor or tv) attached and turned on, the image may appear on either the laptop's display or the external device.
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Connect your TV to the computer with an S-Video cable. Turn the TV on and choose the AV option (of your TV) to S-Video. It will tell you that there is no signal on the TV.Press the Fn key on the keyboard. While keeping that key pressed, press the F5 key. A small rectangle appears on the screen showing different connection possibilities (LCD, LCD +TV, LCD+CRT, TV only, CRT only). You can cycle through the options by pressing F5 repeatedly. You select the output option (TV + LCD).Release the keys . You will then have your two screens.

Note: I assumed you connect the TV through the S-Video. If your TV can be used as a monitor (it has a VGA adaptor), then with the F5 key select option LCD and CRT

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