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The input mode of your TV some how changed from your Monitor, (VGA, or HDMI, or PC in) to tuner, and it is trying to stations.
If you have an "INPUT" button on the TV set push it until your monitor comes back. If there is no INPUT or SOURCE button on the TV itself, you need to get a working remote.
FIrst, cover the basics.
1) Is it plugged into an active power source?
2) Is the monitor attached to the computer as described in any quick setup guide coming with the monitor or computer?
3) Has the monitor been turned on?
4) Is the monitor recognized as a device by the computer?
5) Does any other monitor work with your computer?
6) Have you swapped cables to see if the cabling is bad?
7) Have you tried attaching the monitor to another computer to see if the monitor comes on?
9) Does the monitor LED light come on showing it is powered?
You see, the problem could be in the computer, in the cabling, or in the monitor, or at the wall switch where you plug in power. People kick out power plugs, pull out cabling, etc. accidentally. That is why you have to check the basics.
If the power supply built into the monitor is blown, you are out of luck. But do not assume that is the problem until you eliminate the basics above.
Any changes to the hardware or software before you got this? Anyone been playing with the brightness setting?
You have to narrow down what might be the problem.
I'm guessing you are using a the VGA input of this monitor (the smaller "D" shaped connector with 15 pins) on the back. If not, and you are using the DVI input (larger white connector), then check your PC video output. I've seen this occur with HP monitors when they accidentally get set to "digital" input. Its easy to set that way (even by mistake), but not as easy to reset to analog (VGA). To do that, you'll need to find someone with a DVI output on their video card. Once you connect to a DVI source, the monitir will come on and stay on. You then need to go into the menues of the monitor, find the setting and change it back to "analog". After you do of course, you won't get an image on your monitor until you reconnect to an "analog" (VGA) source.
When you turn on most dell monitors they come on with a yellow light, then turn green when the monitor and video source synch. If your light is not turning from yellow to green, your monitor is either dead or not getting a signal from the video source it's plugged into. Verify in your BIOS settings that you have selected to output video through an installed card and not from the motherboard source. If the BIOS settings are correct, your monitor has died. If the light is turning green after you turn the computer on, press the menu button on the monitor and adjust the brightness/contrast until you have a picture. If you don't see anything when the menu button is pressed, then again your monitor is likely dead.
restrat your computer then press continue F8 key untill u get menu
then go to enable vga mode or safe mode or last known god configuration. set your display resolution in display properties to 1024*768 pixel then try.
It's seems your new pc resolution settings, set to high...
Hook up to another monitor and go to settings to correct your
resolution to 1280x768 or less. That will fixed your problems.
I tried both suggestions above and neither worked. 1) Hitting the monitor buttons as stated only got me a "digital" message and then the monitor went black as usual. Never got to any menu options. 2) Going into Safe Mode and changing the monitor settings or downloading/installing the correct driver didn't stick once you went back to the normal startup.
I didn't have another monitor handy to swap out so I had to be a little more creative. The only solution that worked for me is re-booting (F8 during startup) into the mode "Enable VGA Mode". This allowed me to go into the normal desktop with a screen resolution of 800x600. I went online, found the driver, downloaded it to the desktop. Deleted the video driver (Device Manager), installed the downloaded version, rebooted and....no problems.
I have Windows XP. Hope I've helped someone today. :)
The problem is not your monitor, but the video card on your computer that it doesn't work on. If the video output on your computer is built in, residing near your keyboard / mouse ports, you can purchase another video card to put into your computer and connect your monitor up to that instead. If it attaches to a separate card inside your computer, just replace it.
There are three kinds you can get, AGP, PCI, or PCIe. Make sure you get one that will fit inside your computer.