![]() Try pressing keys on the keyboard or moving the mouse. If none of that works, try restarting the computer by pressing the power button. The next easiest thing to do is to check all the cables. Whether you are using VGA, DVI, HDMI or DisplayPort to connect your computer to your monitor, cables can sometimes become detached. This is especially true for cables that don’t screw into the back of a monitor. Make sure you check the connection at the PC and on the monitor. #Screen lights up but no display phone lg vista youtube Pc# For those of you who have more than one video card, you need to be careful how you connect the monitors. If you have a dedicated graphics card, then make sure the monitor is connected to the graphics card and not to the motherboard video connection. By default, Windows is supposed to disable the motherboard graphics automatically when you have a separate graphics card, but sometimes this doesn’t happen. If you end up connecting your monitor the motherboard, it might work for a little bit, but suddenly go blank. Restarting may fix the problem, but it’ll happen again. If you have dual monitors and you connect one to the motherboard and one to the graphics card, then one monitor will end up blank and now you know the reason why. If the cables are connected and you only have one video connection, then you need to rule out bad cables. To do this, you need to find another monitor to connect your computer to. If the screen is blank on the second monitor also, then it could be an issue with the video cable. Try replacing the video cable or using a different video cable if you have multiple connections options like DVI, HDMI, etc. Method 3 – Check Resolution, Display & Source If using VGA works, then it could mean there is an issue with your HDMI or DVI cable. Sometimes if you accidentally set the resolution in Windows higher than what the monitor supports, it will simply go blank. To fix this, you’ll have to start Windows in safe mode first. Once you have gotten the computer into safe mode, follow my instructions here on fixing the blank screen issue because of screen resolution. ![]() In most modern versions of Windows, the system actually reverts back to the original screen resolution within 15 seconds unless you click on the Keep Changes button. Also, Windows normally detects the highest resolution your monitor can support and shows only those options. So you’ll only run into this program if you are using an older version of Windows or a really old monitor. #Screen lights up but no display phone lg vista youtube windows#. ![]()
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