No mike, I just pressed on it and the system failed. I have tried all in the manual owbist sent me a link for. All without success. I'm taking it back to where I bought it so they can sort it out. The screen was getting darker and darker and both brightness and contrast were on the max 100 so maybe I have a dud for it not quite 6 months old. Thank to you and owbist for your assistance. Cheers to you both.

You may have a driver mismatch to the monitor. Try this: Boot up in the safe mode. That mode loads only the essential software to operate the computer and loads a low resolution, generic monitor driver. Does your monitor oepeate in this mode? If so, you may be on the path to a cure. Change the monitor driver to one that suits your monitor, then reboot. After you get it working again, check to see how the sleep modes are set. Before you change the driver, record the one that is current. You may wish to return to return to it. ************************** A tip for future reference: Before changing monitors, set the driver to the low resolution VGA mode, 640 x 480 pixels. Change monitors and then change to a driver one that matches the replacement monitor. ************************** I see another possible problem and that is your old monitor may not be plug-and-play. The later versions of Windows do plug-n-play while booting. It attempts to interrogate your monitor and if it gets a return of garbage, it may act on it if it isn't smart enough to know this is not a plug-n-play device. I ruined a monitor once when I first installed Windows 95. I had a video card that had the capablity to output a wide range of driving voltages to the monitor's sweep circuits. However, it was not a plug-n-play device. Windows set the card to the wrong voltages and overdrove the sweep circuits. The monitor lasted about 5 minutes. Lets us know how it turns out. If the monitor does not operate in the "safe mode", there is something more wrong - could be the monitor, or could be the video hardware /circuits.

Don't have any service information on this set, but the problem will be in the vertical circuit. The vertical IC is probably shorted. Seen this same symptom in Sony and Philips sets. Their vertical circuit has a (+)13v and (-)13v, which is derived from the high voltage transformer. One of the diodes is usually shorted by a shorted vertical IC. Sorry, but that's the best I can do. pw

driver update was apparently installed 1/24/2018. Unable to roll back driver -- it's grayed out. In monitor's properties, a notation says: "Device DISPLAY\DELF018\5&66c7e57&0amp;UID256 requires further installation." Will need to delay further work on this til much latter today. P.S. I do like this computer. Have never had any problems with it previously. The thought of reinstalling software & obtaining the various permissions is painful! Is there an easy way, and for a reasonable price?