Why did my monitor stop being detected?
If the cable is damaged or malfunctioning, Windows will not detect the second monitor. Check if the second monitor is connected to a power source. Some monitors have a switch on the back to turn on the screen. Make sure you select the correct input (HDMI, DVI, etc.) using the controls built into your monitor.
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Why is my monitor suddenly not working?
Try uninstalling (or reinstalling) your graphics drivers and uninstall any new programs you have that might be causing a problem. Make sure your resolution and refresh rate are set correctly (if you set them too high, your monitor may not be able to display a screen).
Why won’t my monitors go to sleep?
One possibility is a hardware failure, but it could also be due to your mouse or keyboard settings. You can disable sleep mode on your computer as a quick fix, but you can get to the root of the problem by checking the device driver settings in the Windows Device Manager utility.
Why is my computer monitor not sleeping?
When your computer does not wake up from sleep mode, the problem could be caused by several factors. One possibility is a hardware failure, but it could also be due to your mouse or keyboard settings.
Why is there no sleep mode in Windows 10?
Windows 10 won’t sleep issue is also known to be caused by an external device connected to your computer. Devices like camera, external hard drives, microphone and other USB connected devices may be preventing your computer from going to sleep.
Why won’t my computer sleep Windows 10?
If your Windows 10 computer stays awake all the time and never goes to sleep, the problem is likely caused by your computer’s power settings. In certain cases, Windows 10 won’t sleep issue could also be caused by an external device or open program preventing the computer from going to sleep.