Monitors work well for a while then have trouble booting up
Initially, could un plug power cord, then plug it back in and the monitor would come up just fine. Over time had to do this routine 2,3 or 4 times to get it to come back on. Finally, it just doesn't come back on at all.
I have two monitors of this type and have had the same problem with both of them. They are used as a 2nd monitor in my set-up. My #1 monitor works just fine.
Re: Monitors work well for a while then have trouble...
It is a symptom that like T.V's usually manifest before they go busted. I also had that kind of problem before. Then after 4 to 5 months, my monitor just has a black screen. It powers on, but still a black screen.
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Here's a few things to try. First, make sure the power cord you're using is good. For most monitors the cord not only plugs into the wall it also plugs into the back of the monitor. Make sure both connections are good. If you have a spare power cord, maybe one from you desktop computer, you can try replacing the cord on the monitor to see if you can get it to powers up. Many monitors have replacable fuse. On some monitors you replace the fuse from the outside. Other monitors require you to take the back off to get at the fuse. If none of these easy fixes work your monitor may have a more serious problem. If so, replacing it may be your best option if you don't want to go through a lot of PC board debug.
Try checking inside the computer for loose wiring near where the power supply box plugs into the motherboard, make sure that you turn the computer off and remove it from the outlet before opening it. While the computer is open, check all of the leads going into the motherboard are pushed in gently but firmly. Remove the RAM clean it with a soft paintbrush and then return them to there slots ensuring that they are seated correctly. Do the same with the graphics card and sound card if you have them in PCI slots or AGP slot returning them correctly into thier slots.
Put everything back together and before powering back on make sure that the power leads going into your PC and into your monitor have not been damaged in any way. Reboot your computer and try again. If you still get a shock or your computer does not boot properly then you may need to change the power supply box.
Try unplugging the power cord to your computer tower, click the power button to drain the capacitors in the mother board then plug the power cord back in and try to boot up. Has helped me repair several similar black screen problems. Chuck Housecall101@aol.com
Monitors need power cords to function, & there is nowhere near enough power in the data cable to power the monitor. So, it sounds like the power cable got pulled out somehow and is now lying on the floor. The power cable will be a small plug like you have on a radio or other similar devices instead of the standard sized plug that older monitors have. Once you plug the power cord back in, it should be fine.
i fixed this problem by unplugging the monitor, unplugging the video cables. Then hold down the power button while plugging it back in. Release power button and then press power button for on. It worked then. I got the icon for no signal, i plugged back in my monitors. Sceptre X9W
Have you disabled your onboard video in the BIOS? Boot your machine with the vga cord to the motherboard. You need to get into the BIOS. Depending on the make of your machine you need you will need to hit the del key, f2, or even f1. Go to the periphrial setup and disable your onboard video. Save the BIOS turnoff the computer and plug the monitor into you vga card. That should do it.
To change it back to your motherboards vga just reverse the instructions.
Let me know what happens.