Brand: HP
Category: Computer
Document Type: Parts/Service
Language: EN
Available Languages: EN , ES
Parts/Service for P22h G4
Uploaded: Nov. 21, 2025, 7:24 p.m.
Manual Publish Date: 2021-05-01
This guide provides information on maintenance, service, and troubleshooting for HP P22h G4, P24h G4, P27h G4, P22 G4, and P24 G4 monitors. It covers general descriptions, features, component identification, removal and replacement procedures, connector repair, function testing, and troubleshooting common problems. Safety precautions and regulatory information are also included.
Troubleshooting and error codes
| Problem | Possible cause | Solution |
|---|---|---|
| Screen is blank or video is flashing. | Power cord is disconnected. | Connect the power cord. |
| Monitor is off. | Power the power button. NOTE: If pressing the Power button has no effect, press and hold the power button for 10 seconds to disable the Power button lockout feature. | |
| Video cable is improperly connected. | Connect the video cable properly. | |
| System is in Sleep mode. | Press any key on the keyboard or move the mouse to exit Sleep mode. | |
| Video card is incompatible. | Open the OSD menu and select the Input Control menu. Set Auto-Switch Input to Off and manually select the input. | |
| Image appears blurred, indistinct, or too dark. | Brightness is too low. | Open the OSD menu and select Brightness to adjust the brightness scale as needed. |
| Check Video Cable is displayed on screen. | Monitor video cable is disconnected. | Connect the appropriate video signal cable between the computer and monitor. Be sure that the computer power is off while you connect the video cable. |
| Input Signal Out of Range is displayed on screen. | Video resolution and/or refresh rate are set higher than what the monitor supports. | Change the settings to a supported setting. |
| The monitor is off, but it did not seem to enter into Sleep mode. | The monitor's power saving control is disabled. | Open the OSD menu and select Power Control > Auto-Sleep Mode and set auto-sleep to On. |
| On-Screen Menus are Locked is displayed. | The monitor's OSD lock function is enabled. | Press and hold the Menu button on the front bezel to 10 seconds to disable the OSD lockout function. |
| No low-power sleep mode | The monitor's power button is locked. | Press and hold the power button for 10 seconds to disable the power button lock function. |