Moniter i have an envision moniter. When i turn my computer on the screen stays black and a small box does come on for about 5 seconds and says no signal. whaat do i do to get a picture to come up. I do hear the windows come on but no picture

Probably the power supply is failing

When the power light is flashing the monitor is not getting a stable signal. This is hard to answer without direct troubleshooting. Check the cables first, make sure they are connected securely. If you still have problems test another monitor you know works or move monitor to a computer you know works, this will determine if the monitor is the problem or not and tell you if it is your "graphics port or adapter". If another monitor works fine, use the working cables to test the "broken" monitor. If you have an "all-in-one" computer, ignore the above steps and use a start-up repair disk. The reason this is hard to troubleshoot is there are so many things to diagnose. More than likely your "graphics card" is failing. These are some tricks to repair. You can update the driver, buy a graphic card separate from the stock port.

Try a different video card or disconnect the one you have in your PC and use the VGA monitor connection on the motherboard. If it works your video card is gone.

Unplug power. Unplug VGA cable. Remove back of monitor. (four small Philips headed screws along the bottom rear. Remove screws attaching Monitor to it's base. Carefully, lean the screen away from back of case. Gently unplug 25 pin cable from the screen.
Connect AC power.
Screen should power on Gray to White. Ble light comes on Blue.Flickers then changes to Amber.
Reconnect VGA cable. Monitor should work.
Close up the monitor in reverse order to opening it.
If these steps don't solve your monitor, consider replacing as cost of repairs may shock you.

Open up the set and look for bad caps, see saome examples of failed monitors here: http://s807.photobucket.com/home/budm/allalbums

The problem is not with your screen. Its the problem of Video Card of your system which is unable to send Video Signals to the Screen.

http://www.testfreaks.com/blog/review/22-envision-g22lwk-dvi-widescreen-lcd-monitor-wspeakers-black/

Here is a review of the monitor, it says it does have speakers, but not very good review, but most if not all speakers that are built in are not great. I hope this helped, Gym

Take the post (power on self test) disconnect vga cable and connect power cable if monitor shows no signal check signal cable massage then monitor is ok fault is in cpu. open it and clean the dust
by vaccum cleaner you will get the display again

This monitor has "back lights" that are essentially like flourescent lights. These are high voltage lights and can easily fail. since you are getting some light initially, I would suspect a defective part that heats up a bit right away and then fails. I would try to replace the entire backlight board. This is the small board on the side (usually).
Dan

May be your IP board is going out. Replace IP board.