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Freedom251 › Blog › blank screen

How to Restart a Monitor—and What to Check If It Stays Blank

By Freedom251 Team · · 3 min read

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Yes. Turn the monitor off with its power button, wait briefly, then turn it back on. If that does not clear a temporary problem, try a power cycle: disconnect the monitor from power, wait, reconnect it, and switch it on. This is different from restarting the computer or restoring the monitor’s factory settings.

Restart the monitor safely

  1. Check the basics first. Wake the computer if it may be asleep, confirm the monitor has power, and make sure the video cable is secure at both ends. A lit power indicator with a blank screen can point to the signal, input, or source rather than a monitor fault. ViewSonic’s no-display guidance and ASUS’s troubleshooting guide recommend checking these possibilities.
  2. Turn it off and back on. Use the monitor’s power button. The exact controls vary by model; consult its manual if needed.
  3. Power-cycle it if the issue remains. Turn the monitor off and unplug its power cable. ViewSonic’s general instructions say to wait 15–30 seconds, reconnect power, and turn the monitor on. Follow your model’s manual if it gives different directions. ViewSonic’s power-cycle instructions

Know which kind of reset you need

Action What it affects What to expect
Monitor restart The monitor Turns the display off and on; settings are not deliberately restored.
Monitor power cycle The monitor’s power Disconnects and reconnects monitor power. ViewSonic’s cited general interval is 15–30 seconds.
Computer restart The computer and its operating system Restarts the source device and can interrupt open work. Save work first.
Monitor factory reset The monitor’s settings Restores defaults through the on-screen display (OSD), potentially undoing customized settings. Menu labels and effects vary by model.

Manufacturers may label the factory-reset option “Reset,” “Memory Recall,” or “Factory Defaults.” Their guides treat it separately from unplugging and reconnecting power. Check the monitor manual before choosing it. ViewSonic, ASUS, and MSI

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If the screen is still blank, check the signal path

Confirm the selected input

Open the monitor’s OSD and select the input used by the connected computer. A monitor can be powered on but display nothing if it is set to a different input. MSI’s troubleshooting guidance

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Inspect cables, docks, and adapters

Check both ends of the video cable. If you are using a dock, adapter, or converter, bypass it temporarily and connect the computer directly to the monitor where possible. Try another compatible cable if one is available; replacing a cable makes sense only if inspection or a swap points to a connection problem. Check that the cable and ports match the devices. ASUS and MSI

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Test another device or display

If practical, connect the monitor to another computer or test the computer with another display. This can help isolate whether the problem follows the monitor, cable, or source device. ViewSonic’s no-display guide

When to restart the computer

A monitor power cycle does not reboot Windows or reset its graphics driver. If the connection and input checks do not help and the computer may have a graphics-driver problem, Microsoft says Windows users can press Windows logo key + Ctrl + Shift + B to try resetting the graphics driver. If that does not help, Microsoft suggests restarting the Windows device. Save open work before restarting. These are computer-side troubleshooting steps, not monitor resets. Microsoft’s Windows external-monitor troubleshooting guide

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When basic troubleshooting is not enough

A blank screen does not identify one cause on its own. The computer may be asleep, the wrong input may be selected, a cable or adapter may be faulty, or the computer may not be sending a usable signal. If the monitor has no power indicator, check its power connection and outlet; persistent intermittent power can also warrant checking the cable and adapter. If the problem continues after reasonable cross-tests, contact the monitor maker’s support service. LG’s intermittent-power guidance

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