I have same problem but my monitor us fine have floating color bar Please help it wont activate connection to the screen only 1 , 2 & 3 green on tower??

Disconnect the monitor cable from the computer and power on the monitor. It has a built-in diagnostic program. If you see color bars floating around the screen then you monitor is O.K.

bad cord on back try to wigle it by the plug in and by the screen it self

Those jacks you are plugging into on the HDTV are not composite inputs. They are component. The reason the color is not right is, you have to have a Red, Green and Blue connection.

The black and white picture from the 1 cable is because you are using a composite signal into a component green.

Big difference between a composite and a component signal. I hope this helps.

On most Dell monitors there is a built in diagnostic check. Disconnect the VGA or DVI monitor cable from the computer and power on the monitor. If you see floating color bars then the monitor is not the problem.

This can happen dur to the following reasons
1. Monitor cable that is connected to the tower may be loose, disconnect it and reseat it properly.
2. Monitor cable is damaged, please check if the cable is pressed against some thing and damaged, if so you can detach the monitor cable and buy a new cable.
3. Monitor is faulty, the color functionality electronics is bad, this can be rectified by a monitor service personnel.
4. Display card is faulty (onboard or add on), to check if this is not the scenario - Disconnect the monitor from the tower and turn of the monitor and the switch it on you should be seeing colored bars, if the colours are looking good then the monitor is fine and the display card is faulty.

Please check the above steps one by one and reply to this post in case you are unable to narrow down the cause. Thank you for contacting Fixya.

The 123 lights on tower translates as:

Routine system activity subsequent to video initialization.
Watch your monitor for on-screen messages.

Disconnect the video cable from the computer and see if you get floating color bars on display. If not, your monitor is defective.

have you connected up correctly, have you selected correct EXTERNAL inputs, you do NOT "tune" a Channel to see picture, you choose external AV input on set. Must connect color to color. 3 for Composite Video AV.Yellow, Video, Red & White Audio. and 5 cables for Component 3 for Video , & 2 for Audio Blue, Green, Red, Also Red & White, Audio.
AV

Please disconnect the Monitor Data cable from Computer.
If you see Dell Colored bars, it means, monitor is working fine,
If still black, please ask for replacement, since Monitors have 3 years of warranty if not purchased with the computer.

Now connect the cable back to computer and turn the computer off by holding the power button on computer and turn it back on...

Blinking Green shows that computer is in sleep mode......

Hope this should resolve the issue.

not a happy machine...

1. Check in systems manager, device manager, to see that the monitor is clean, with no ? mark or ! point.

2. Reinstall drivers..

3. check all connections to monitor for fit. Unplug and check the connectors for grit or crud.

4. Get a new monitor.

Got backup?

Your comp's video card refresh rate (in Hertz, abbreviated Hz) may not be totally compatible with the monitor. Check the properties of your video card, and change the refresh rate (you may have to look around for it) to 60 Hz. This is a pretty standard refresh rate that works with just about every monitor. If it's already there, I'm afraid someone else will have to try and help!

Hope this helps, and please rate my answer, good OR bad.

Good luck!