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First place to look will be the power supply section, look for bad caps (bulging tops or bottom seals), the post back what you see so we can guide you further for direction such as voltage checking, see example of failed monitors due to bead caps: http://s807.photobucket.com/home/budm/allalbums
spc12b, Have you tried the flashlight test yet? How old is this monitor? Your monitor has a 2 types of power supplys in it. A switch-mode-power-supply and an "INVERTER" supply. One or both of them could be having a problem. The inverter needs DC from the smps to change it into AC to light up the cold-cathode-fluorescent-tubes that are hung in back of the lcd panel. Let me know results of flashlight test. After screen goes black, hold light 1-2" from screen at different angles. Let me know if you still can see the win-desktop screen even though it is still dark.. Bye for now. louie12fix on fixya or lmistyrel @aol.com
Please try to check it from Control Panel > Sound, speech & audio devices > Sound and Audio Devices > Hardware tab > then select the Device Name then click Properties tab to verify its condition status or you opt to click Troubleshoot tab. regards
I had the same problem with my Proview monitor. I was told by a lot of people it was trashed. I typed in this website ati.amd.com and discovered my ati driver was either missing or some components were missing.
I downloaded the driver and now my monitor is staying on. I don't know if this will solve your problem like it has mine, but it's worth reading up on it.