Your monitor has some of the following inputs:
* VGA
* HDMI
* composite
* component
* coax
You need to "tell" the monitor which of the above "input" channels that the monitor should "listen" to.
SOURCE: no composite input signal
Try the following:
Right after power on, tap the F8 key to see if you can get a short menu to come up.
If it does, select "Safe Mode."
If your screen looks different, it may be just the driver for the display card or monitor is trashed (Windows like doing that, keeps us challenged).
- Open Control Panel, then System, then Hardware, finally Device Manager.
- Locate Display adaptors, open and delete the adaptor listed (all, if more than one.)
- Locate Monitors, open, delete any listing there.
Reboot.
Windows should 'find' two 'new' devices and install the drivers for them.
The display may still be different if you had other than the default settings.
Go then to the Display folder of the Control Panel, click on 'Settings' and experiment.
Depending on your Windows version, if you choose something dumb so it makes the screen unreadable, ignore it and Win will ask if you want to keep it and give you some time to acknowledge that you like it.
When you don't, it will just go back to the pre-tinkering settings.
SOURCE: how to remove "no composite inpute signal"
If you have the same problem with both monitors, it sounds like a display card setting or problem.
The chances of you having the same problem with different units is 1- 50.
Try the monitors on a different PC and get back to me.
SOURCE: My husband downloaded several Windows
Not sure this will help but it sounds like you might have PIP (picture in Picture ) turned on
fastrepairs
lcds combine the componenent video (red , blue, green) with the
composite video and audio (yellow, red, white). If your tv is on the
component input then you hear audio from the composite input since the
audio inputs (red, white) are shared. Look for a source or tv input
button on your remote or the tv itself and try pressing this button
unti you see a picture with sound.
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