My screen is blacking out without removal of power

The dialog box you are seeing means that the monitor is not receiving a signal from the computer.

check your cable going from the monitor to the computer. if the cable seems ok, hold the power button on your towerr until it turns off, then wait 5 seconds and push the computer power button again.

Cheers

Right click on your desktop go down list to properties and left click under the screensaver tab click the power tab and turn off the power saver in other words change settings to always on and no hibernation

I have repair many Westinghouse monitors. You'll need a set of hardened plastic pry bars to remove the bezel. You'll need an ESR meter to test the capacitors in the power supply. You'll need an static isolated soldering iron the replace the capacitors. The capacitors you can get at a local radio shack. I do these repairs daily and they're not as hard as it seems.

Same problem - unplug both computer and monitor - hold power button for monitor for 15-30 seconds...then power it back on and then power on the computer. Seems from other sites there is a power issue with the monitor - this worked for me.

This sounds like a video problem with the COMPUTER.....try the monitor on another computer. Usually, if you can see the monitor test pattern the monitor is ok.

Hi,
First, verify the monitor is functional.
Monitor STFC (Self Test Feature Check)
Turn off the monitor
Plug the monitor power cord directly into the wall socket to remove any
surge protectors or APCs from the troubleshooting equation
Unplug the monitor video cable from the back of the computer
Turn on the monitor
The floating dialog box should appear on screen against a black background.
If the issue appears during the STFC, the monitor is defective.
What are the results please?

Self-Test Feature Check (STFC) Your monitor provides a self-test feature that allows you to check whether your monitor is functioning properly. If your monitor and computer are properly connected but the monitor screen remains dark, run the monitor self-test by performing the following steps:

1. Turn off both your computer and the monitor.
2. Unplug the video cable from the back of the computer. To ensure proper Self-Test operation, remove Analog (blue connector) cables from the back of computer.
3. Turn on the monitor. The floating 'Dell - self-test Feature Check' dialog box should appear on-screen (against a black background) if the monitor cannot sense a video signal and is working correctly. While in self-test mode, the power LED remains green and the self-test pattern will scroll through the screen continually.
   
4. Turn off your monitor and reconnect the video cable; then turn on both your computer and the monitor.

If your monitor screen remains blank after you use the previous procedure, check your video controller and computer system; your monitor is functioning properly.

Thanks
proton

have you check the display on external monitor, check it by connecting to vga port of your laptop,
if there is a display then its the problem of your laptop screen

it seems tht the monitor has gone bad & needs to be replaced....try running a monitor self test by unplugging the monitor cable frm the back of the cmputer & make sure the monitor is receving power frm the wall outlet....chk if the monitor displays anything......let me knw if it wrks

Those are the ones, you are going to have to remove them to test as they are across a transformer