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This document pertains to HP desktop computers with Windows 10, 8, and 7. Troubleshoot a video connection from a monitor (or a TV being used as a monitor) to a desktop computer. If your computer has a built-in display, see Screen is Blank after Starting the Computer. This document will help you determine if the blank screen is being caused by the computer hardware, the video signal to the monitor, or the monitor itself. Before you begin troubleshooting a blank monitorCheck the following items before using the steps in this document:
Step 1: Check the powerDisconnect the video cable from the monitor and make sure the monitor power cable is plugged into a power outlet. With the monitor plugged in, press the power button on the monitor. There is a power indicator light located on the monitor case.
Step 2: Check for fan noises, beeps, and power lightsTo help determine whether the problem is caused by the computer or the monitor, turn on the computer, listen for sounds, and look at the lights.
Step 3: Reset the monitorAt first setup, or under certain signal conditions, the monitor might not be able to switch to a new display resolution. Do not shut down or restart the computer. Instead, reset your monitor. If you need instructions for resetting your monitor, search the HP support website. Go to HP Customer Support, and follow the instructions to find your product. You should see the image from the computer on the screen. If not, continue to the next step. Step 4: Check for error messages on the monitorUse the following steps to see if a built-in on-screen message is displayed.
Step 5: Check cable connectionsOtherwise, check the video cable connection on the back of the computer and on the monitor. Make sure that it is connected properly and the connecting screws are tight. Turn the monitor off and then back on again (while the computer is on) to see if an image is displayed. Make sure that you have the monitor power adapter cord plugged into the power connector. After you have reconnected the power cord, turn on the monitor (while the computer is on) to see if an image is displayed. If there is still no image, continue to the next step. Step 6: Connect the computer to another monitorConnect the computer to another monitor to determine which device has the problem (the monitor or the computer). If you do not have an extra monitor, temporarily connect the computer to another monitor for troubleshooting purposes. After the monitor is connected, turn on the computer and the monitor.
Step 7: Inspect the video cable and video connectors for damageInspect the video cable and video connectors for damage. Check for sharp bends or breaks in the cable, or bent or broken pins at the connectors. With the monitor and computer off, try to straighten bent pins with a small metal tube, like the tip of an empty mechanical pencil or the tip of a retracted pen. If you had to straighten any pins, reconnect the monitor making sure that the video cable is firmly connected and then turn on the computer and monitor. If the monitor is still blank, continue to the next step. caution: Step 8: Reset the BIOSIn case an item was changed in the BIOS, such as the primary monitor device setting, use the following steps to reset the BIOS back to its default configuration: note:
Step 9: Reseat loose internal componentsIf the computer case was recently serviced or moved, a card, cable, memory module, or processor may have become loose. When this happens, the computer might make a beeping sound when it turns on. Use the following steps to check for loose components: warning: caution:
Step 10: Change the display resolutionUse this step to configure Windows to use a display resolution that is compatible with the main monitor device. In order to perform these steps, you must connect the computer to another working monitor. If you cannot view the first startup screens, skip to Replace the graphics card or have the hardware serviced. Use the following steps to change to a compatible display resolution and color depth setting from a standard graphics mode. For flat panel LCD monitors, set the display resolution to the monitor's native display resolution.
Step 11: Disable power settings in the BIOSIf Windows was recently upgraded, Windows might be starting up into a Power Saving state and producing the blank screen before it loads. After Windows loads (about 2 minutes after turning on the computer), press the power button briefly or press the Suspend key on the keyboard to see if the computer comes out of a suspended state. If the computer opens into a suspended state every time the computer is started, use the following steps to disable Power Saving in the BIOS. note:
Step 12: Replace the graphics card or have the hardware servicedIf you have tried all the steps in this document and are still having the issue, the hardware is probably faulty. If the monitor does not work on another computer, the monitor may be defective. The monitor should be replaced or serviced. If the monitor works on another computer and the computer has a discrete graphics card, try replacing the graphics card using the following steps. caution:
Why is my HP computer screen black but still running?If your HP laptop screen still goes black, you need to restart the explorer.exe process. This will help clear any cache that might be intervening with the internal features of the laptop and causing the issue. Press the Ctrl+Shift+Esc keys to open the Task Manager.
Why is my laptop turning on but no display?One of the main causes for this issue is a corrupt system file preventing the operating system from loading, resulting in a black or blank screen. Restart Windows to see if it's a temporary issue and resolves itself with a reboot. If the problem persists, erase your hard drive and reinstall Windows.
How do I fix a black screen on my HP computer?HP Laptop Black Screen FAQ. Remove the battery and long-press power button (laptops only). Update your graphics card drivers.. Log in with a different user account.. Perform a clean boot.. Disable Fast Startup.. Update your BIOS.. Run Startup/Automatic Repair.. Perform System Restore.. Why HP laptop display is not working?It may be time to update your display software. Have you tried turning it off and on again? You can overcome many common issues with a quick reset. If your system functions intermittently, check your PC settings to confirm the hardware and operating system are up to date.
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