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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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.
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.
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.
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.
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.
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.
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.
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.
Press the Windows Key.
Type Adjust screen resolution and press Enter.
Find Display and click the down arrow on the right-hand side of the box.
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.
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.
You will need a cable that connects the tv to the pc. If you pc has a vga connection and your tv has a vga connection, then you would purchase a vga cable and connect it. If the computer and the tv have 2 different types of connections you will need some type of adapter between the two of them.
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.
1 - the cable you are trying to use will not work - the RCA inputs in your tv can't accept the signal coming from the VGA. To connect the laptop to a tv the tv must have an VGA input, nothing else will work.
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. Press to switch the video image between the display only, the external device only, or the display and the external device simultaneously.
The DV6000 has all the drivers needed to connect to a TV as long as the TV has either a s-video connection or a pc vga input. The vga input is usually blue in color on the tv but on the laptop it may appear dark tan or brown and does not have screws to hold it into place, the plug just fits in and tension holds it in place. Once you connect the cables, change the input on the TV to the type of cable you are using. The laptop should automatically pick up the signal from the device and load the driver for it. The desktop should appear on the tv if the output signal and input are matched. The icons may appear different on the TV if the resolution is not close to a match but that should not be a concern unless it is cutting some of the picture off, in that case all you have to do is change the resolution to one that is easier for the tv to show. The dv6000 allows you to toggle through the video output settings by holding down the Fn key and tapping the F4 key, this will change the display to both laptop lcd and tv, just tv, just laptop lcd etc. It will even let you extend the desktop from the laptop to the tv or from the tv to the laptop, making one long display side to side.
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
On the remote control for your television, there should be a source or input button. Pressing the key repeatedly will switch from cable input to standard tv input, to s-video, or ypbr, or game, or various others. Try doing this and see if the image appears, this awlays works for me. If I am telling you something you have already tried, i am sorry!