The most common reason for the second monitor going black might be the wrong cable connection or other cable issues. What is this? Some of the monitors come with many input choices so it needs you to choose the cable and port you want to use, such as HDMI 1, HDMI 2, DisplayPort 1.4, USB-C, and so on.
Why is my second screen turning on and off?
The moment the signals are not being transferred correctly, your monitor — for instance as a second monitor — will just turn off. And maybe turn back on, when the data can be transferred in full again. Basically, your HDMI cable shuts down because it’s not able to transfer the necessary amount of data at the same time.
Why do my monitors go black randomly?
Video cable: The video cable whether is an HDMI or VGA connecting the monitor to your PC might be broken or damaged. This will usually cause a black screen when it is touched or randomly as well.
Why does my monitor keep turning off randomly?
When a monitor overheats, it shuts off to prevent damage to the circuitry inside. Causes of overheating include dust build-up, excessive heat or humidity, or blockage of the vents that allow the heat to escape. If the monitor is overheating, unplug the monitor and let it cool down fully before using it again.
How do I stop my second monitor from turning off?
Step 1: Open Control Panel and select “Power Options”. Step 2: Select “Choose when to turn off the display”. Step 3: Set the “Plugged in” options to Never for “Turn off display” and “Put computer to sleep”.
Why does my laptop screen go black when I connect a second monitor?
Updating display drivers can solve the laptop screen not working, but the external monitor does. A corrupted graphics driver will cause your laptop monitor or screen not to show anything.
How do I get my computer to recognize a second monitor?
Select Start , then open Settings . Under System , select Display . Your PC should automatically detect your monitors and show your desktop. If you don’t see the monitors, select Multiple displays , then Detect.
Why does my screen go black for a second when I alt tab?
If you’ve noticed that you get a 1 – 10s black screen when alt-tabbing full screen games where you otherwise shouldn’t (same desktop resolution/refresh), it is due to using Display Stream Compression (DSC) on nVidia GPUs. It appears to be a bug in the driver.
Why does my monitor keep going black Windows 10?
A black screen could also happen because Windows 10 will lose its connection with the display. Using the Windows key + Ctrl + Shift + B keyboard shortcut can restart the video driver and refresh the connection with the monitor.
Why does my laptop screen go black when I connect a second monitor?
Updating display drivers can solve the laptop screen not working, but the external monitor does. A corrupted graphics driver will cause your laptop monitor or screen not to show anything.
Why is only one of my dual monitors working?
Using only one external monitor Make sure the cable connecting your PC to your external monitor is secure. Try changing the cable connecting the external monitor. If the new one works, you know the previous cable was faulty. Try using the external monitor with a different system.
When I try to connect my second monitor both screens go black?
The only way to restore a working display is to do a hard restart with the second monitor unplugged. If it’s plugged in while rebooting, the loading screen works on the notebook but then goes blank. The only way I’ve come up with to restore the notebook display is a hard reset with the second monitor removed.
Why is my HDMI screen black when I connect it?
If the screen goes black when you connect your computer to another monitor via HDMI, then one of the assumptions is because of a faulty HDMI port or cable.
Why is my second monitor not working all of a sudden?
A buggy, outdated, or corrupted graphics driver can cause problems that may prevent Windows 10 from detecting a second monitor automatically. The easiest method to fix this issue is updating, reinstalling, or downgrading the driver.
How do I get Windows 10 to recognize my second monitor?
Select Device Manager from the list to open it. Then, select the arrow to expand the Display adapters section. Right-click your display adapter and select Properties and the Driver tab, and then select Roll Back Driver. If you don’t see a roll back option, reinstall your display driver.
Why does my monitor say no signal when HDMI is plugged in?
Why does my HDMI 2 say “no signal?” Typically, a monitor displays a message “no signal error” when there’s a problem such as a loose cable, loose connections, or a problem with the input device. Graphics driver and output resolution problems can also cause this error.
Why does my screen go black when I fullscreen?
This issue could be due to the display driver is outdated. I would suggest you to update the Display driver from Device Manager manually and check if this helps. Try the below steps: Press (Windows key + X) and click on “Device Manager”.
Why does my screen go black when I press the Windows key?
A black screen could also happen because Windows 10 will lose its connection with the display. Using the Windows key + Ctrl + Shift + B keyboard shortcut can restart the video driver and refresh the connection with the monitor.
When I try to connect my second monitor both screens go black?
The only way to restore a working display is to do a hard restart with the second monitor unplugged. If it’s plugged in while rebooting, the loading screen works on the notebook but then goes blank. The only way I’ve come up with to restore the notebook display is a hard reset with the second monitor removed.
Why is my HDMI screen black when I connect it?
If the screen goes black when you connect your computer to another monitor via HDMI, then one of the assumptions is because of a faulty HDMI port or cable.
How do I get my computer to recognize 2 monitors?
Select Start , then open Settings . Under System , select Display . Your PC should automatically detect your monitors and show your desktop. If you don’t see the monitors, select Multiple displays , then Detect.
Why won’t my dual monitors extend?
Open Screen Resolution by clicking the Start button , clicking Control Panel, and then, under Appearance and Personalization, clicking Adjust screen resolution. b. Click the drop-down list next to Multiple displays, click Extend these displays, and then click OK.
