Either you will notice smudges in the screen or the screen will have a weird shade to it.
no. not possible.
Check what kind of connections the monitor uses, then compare to the motherboard of your PC, or laptop.
bad
how can you tell if a timing belt is bad
carbon dioxide
If you are using a vga connection, usually blue then you may have bent a pin on the connector, the cable may be bad, the monitor could be bad, your video card could be bad, or you could have the wrong driver or settings.
Turn it on; if it's off, it's gone bad.
It will say on the box or you can buy a monitor.
You can tell if a leg of lamb is bad by looking at the expiration date. You can also tell by the smell.
There a a few different ways to tell when a sensor is bad. One way on some sensors, such as temp sensors (or thermistors) is to measure resistance at difference temps to confirm that it is reading correctly, you would have to have the known values for the sensor to compare it to though. Otherwise, you would need diagnostic tools to monitor the sensors while the vehicle is running to know if they are out of range.
You can tell radishes are bad if they are soft, mushy, discolored, or have a foul smell.
Could be bad LCD screen, defective video cable or bad motherboard. First, test the laptop with external monitor. If video on the external monitor is normal but it's bad on the laptop LCD, the problem is somewhere inside the laptop display panel (bad LCD, bad video cable, bad connection between cable/motherboard/LCD). If video on the external monitor is bad too, you have either software related problem or something is wrong with the motherboard. Try reinstalling Windows first, it might help.