SOURCE: digital power saving mode
Are you sure someone hasn't changed the power setting in windows. I've seen similar tricks pulled by so called mates. :-) If windows is OK then check the manual for the monitor and if you still can't crack it take it for a ride to the repair shop. It is under warranty after all. BMW
SOURCE: Monitor keep going into "sleep" mode
try to reseat the memory modules and restart the computer and computer boots to normal mode/then go to power options in control panel and disable the sleep mode option for the hard disk
SOURCE: lg flatron w1952tq goes into power saving mode on
your LG monitor is bad then if you put another monitor on the computer and your getting video. Just as a last resort, you might want to put the LG monitor on another computer and if it stays in sleep mode then you know for sure at that point, the monitor is bad.
SOURCE: LG LCD Monitor won't exit Power Saving Mode
Does your desktop/PC display show anything before the monitor goes into power save mode? If nothing comes up, its possible that you have a loose VGA connection or that your video card/motherboard are defective in some ways. Try using a different monitor.
If the other monitor works fine with your computer, try changing/lowering the screen resolution. If in XP right-click on the desktop and go to Properties, and select the tab for display settings and adjust the resolution. If in Vista/Win7,
right-click the desktop and select Screen Resolution/Display Settings
and adjust it there. Then check and see if your LG monitor works on
it.
If the other monitor also doesn't show any display, most likely the problem is either with your video cable or your PCs video card/motherboard, not the monitor.
Hope that helps. Good luck
SOURCE: how do I fix the error no vga input signal no dvi input signal monitor going to sleep
Check if you VGA is properly settled in the PCI slot. Try to take it out, clean the slot for dust.
If that doesn't help, it is well possible that you VGA is not working any more.
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