HP OMEN 25 Maintenance and Service Guide - Page 21

USB test Confirm whether transmitting data between computer and USB devices. Computer and USB devices Support and troubleshooting The following table lists possible problems, the possible cause or each problem, and the recommended solutions. Table 4-2: Solving common problems Problem Possible cause Solution Screen is blank or Power cord is disconnected. video is flashing. Monitor is off. Video cable is improperly connected. System is in Sleep mode. Video card is incompatible. Image appears blurred, Brightness is too low. indistinct, or too dark. Check Video Cable Monitor video cable is disconnected. is displayed on screen. Input Signal Out of Range is displayed on screen. The monitor is Video resolution and/or refresh rate are set higher than what the monitor supports. The monitor's power saving control is disabled. Connect the power cord. 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. Connect the video cable properly. Press any key on the keyboard or move the mouse to exit Sleep mode. Open the OSD menu and select the Input Control menu. Set Auto-Switch Input to Off and manually select the input Open the OSD menu and select Brightness to adjust the brightness scale as needed. 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. Change the settings to a supported setting. Open the OSD menu and 17