My Monitor Doesn't Work: Is it Power-Saving, Sleeping or Faulty?

[Students, Faculty & Staff] Computers can enter sleep mode or power-saving mode if left inactive for a while. If you are unable to turn on the monitor, follow these instructions to troubleshoot the issue.

Computers can enter sleep or power-saving mode if left inactive for a while. If you cannot turn on the monitor, follow these instructions to troubleshoot the issue. These are listed from the easiest or simplest solutions to the more complicated ones. If these solutions don't work, call 4-TECH at 410-704-8324 or use the CCLT chat service.

Process

Computer monitor doesn't turn on or display images

1. Press the spacebar or move the mouse to wake the monitor from sleep mode.
2. Find the power button on the monitor and press it to turn it on.
3. Verify computer power. The power button should show a steady light. If the light pulses press the power button once.
4. Check the cables on the back of the monitor for loose connections; they should all fit tightly.
5. Verify Windows/Mac display settings (extended, duplicated, etc.)
   1. Windows: Press Windows + P
   2. Mac: Open System Preferences > Display Settings. Select Arrangement and check Mirror Displays.
6. Restart the computer by pressing and holding the computer's power button for 10 seconds to turn it off; wait 10 seconds before turning it back on.
7. If the above steps fail to resolve the issue, report it as soon as possible.

Computer won't resume from Sleep or Power-Saving mode

1. Press the spacebar or move and select the mouse to wake the monitor from sleep mode.
2. Verify monitor power. If unsure, select the power button. When the monitor is on, the power button should light up.
3. If the monitor is on and the computer still won’t wake up, restart the computer by pressing and holding its power button for 10 seconds to turn it off; wait 10 seconds before turning it back on.
4. If you have recurring problems waking the computer, report it as soon as possible.