Emachine ET1850 model when turn on no display picture.

it is something about your monitor not connecting well with pc, check graphics card

Check ALL cables, connections, try another monitor/cable. You didn't provide the Model of eMachine? Does it have a PCI Graphics Card? Reseat Card.

The DVI cable transports the display signal from the video card to the monitor.

I think what Ron is asking is if you used a different cable to connect the monitor to the computer. (I'm assuming you used an old 15 pin monitor cable or whatever those old cables were?)

Without getting into your BIOS:

So on your computer, you probably have an onboard video card (a video card built into the motherboard itself), and a dedicated video card (probably where you're seeing the DVI out).

It may be possible that you have the on board video card (with the traditional connection) disabled, when the dedicated video card is plugged in.

This isn't rocket science, so don't worry. Phillips head screwdriver is all you need.

Pull the side panel off your computer (assuming it's a tower... if not, it's the top panel). Once you have it off, you'll see that video card plugged into a slot on the motherboard, with 1 phillips head screw holding it in place (inside, near the back, where the DVI port is).

Pull the screw, and the video card should come out. From there, the BIOS should recognize your card is missing, and thus revert to using the onboard video card.

youmight remove your graphics and check the socket for dust restart your computer this should activate the found new hardware wizard
if you run an extended desktop this will tell you if the monitor has gone bad
use a vga lead to attach it

click start control panel display change display settings adjust resolution this may vary depending on your operating system you should a no 1 and a no 2 with detect and identify keep an eye on

the screen when you select the number tabs this may vary depending on your operating system when you select the no 2 tab this should be the extended desktop always click apply after making any changes
i have read some reviews on your monitor
So the ex-hubby calls me with his woes - his eMachines T3124 is having problems. Seems that when he cold boots in the morning it hits the "E" splash screen and then just goes to black screen. No bios boot screen, no boot to windows. Everything sounds ok though. After a few restarts it boots ok. So, first trouble shoot is to replace the 180w Bestec power supply with a salvaged 300w Hippro from my T6420 (which was replaced with a 500w) - the one I replaced the mobo on. Works great ... for one night. Next morning I get the frantic call - now he gets nothing after the "E" splash but white wavy lines, but the computer sounds like it's running fine. Ok - ok ... think, think. First thought was maybe the onboard graphics have gone, next thought maybe the mobo is going ....

What is the next thing we do after trying a known, good power supply? Try another working montior. I had him try using a trusty older CRT monitor and Wha-Lah! After less than 3 years the E17T4 LCD monitor had failed. Most recent crisis handled. This little incident has made him realize though that he needs to burn all his picture and videos to CD. Scared him to think he could have lost them. Today's reminder? BURN your pictures and videos now! You never known when something might happen. And eMachines monitors are ****.

hope this helps

Its your computer/cable. Either the cable is damaged or the the display chip of your motherboard is defective.

You will need to adjust the refresh rate of your system.

1) Right click on the desktop and go to properties.
2) When the Display Properties window opens go to the Settings tab.
3) The go Advanced.
4) Once ni the advanced screen go to the Monitor tab.
5) Under screen refresh rate select around 60Hertz. (Make sure the box next to "Hide modes that this monitor cannot display" is ticked.
6) The click OK. And OK again to exit Display Properties.

Please check the cable that connects the monitor to the video card. Reseat the cable, the issue might be a loose connection. You can also try a known good monitor to isolate if it's the video card or monitor that is causing the problem. Something is preventing the monitor from receiving signals from the video card, hence the "no signal" message.

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Hello!

I see many monitor with that trouble.
When you turn on comp., you can have a picture on monitor about 10-30 min. and that go in black screen, or If you change resolution again go in black screen.
You must repair monitor or bay another.

You'll get either no signal or missing color(s) if pins are bent or missing.

Carefully bend pins back with small needle-nose pliers. Pin 9 is missing by default - if any other pins are missing or broken, you'll need an expert to wire a new VGA plug.