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7 Tips to Fix Computer Monitor that Gets Black Screen.HP Desktop PCs – Computer Starts but Monitor Remains Blank (Windows) | HP® Customer Support
Are you getting a black screen or blank display during boot up or when using your computer? There are times when your monitor is connected to your computer just fine, but you end up getting the black screen with a message like No Input or Cable Not Connected. Occasionally, it can be a software-related issue also. Check to make sure the monitor is turned on, which is usually indicated by some kind of light on the power button itself.
If the light is on, the monitor is on and you should see some message. If the monitor is on, but nothing is showing up, try to press the menu button to bring up the built-in monitor controls. If still you have a blank screen, then this could mean there is a problem with your monitor. Even with nothing connected, you should be able to bring up the monitor menu. Try connecting a different monitor if you have one. If a separate monitor works fine, then it could mean the power supply is bad on the original monitor.
Try replacing the power supply and see if that fixes the issue. Now check to make sure the computer is properly turned on. The main thing here is to check for any warning lights or unusual beeps when you power on your computer. If the power button or one of the status lights is red or orange or if the computer beeps several times when turning on, this is indicative of an internal problem.
You can read my previous post on how to test your computer for bad memory , which can be one cause for the beeps. The beeps can also be related to the motherboard, video card, etc. You will have to reference the PC manufacturer manual to figure out what the beeps or status lights mean. Try pressing keys on the keyboard or moving the mouse. If none of that works, try restarting the computer by pressing the power button.
The next easiest thing to do is to check all the cables. Make sure you check the connection at the PC and on the monitor. For those of you who have more than one video card, you need to be careful how you connect the monitors. If you have a dedicated graphics card, then make sure the monitor is connected to the graphics card and not to the motherboard video connection.
If you end up connecting your monitor the motherboard, it might work for a little bit, but suddenly go blank. If you have dual monitors and you connect one to the motherboard and one to the graphics card, then one monitor will end up blank and now you know the reason why. If the cables are connected and you only have one video connection, then you need to rule out bad cables.
To do this, you need to find another monitor to connect your computer to. If the screen is blank on the second monitor also, then it could be an issue with the video cable. Sometimes if you accidentally set the resolution in Windows higher than what the monitor supports, it will simply go blank. Once you have gotten the computer into safe mode, follow my instructions here on fixing the blank screen issue because of screen resolution. In most modern versions of Windows, the system actually reverts back to the original screen resolution within 15 seconds unless you click on the Keep Changes button.
Also, Windows normally detects the highest resolution your monitor can support and shows only those options. Another situation where you can end up with a blank screen is when you have connected your laptop to a secondary display or projector and then you simply unplug it without telling Windows. You can normally fix this on laptops by pressing one of the function keys and then pressing the monitor key on the keyboard.
Lastly, you should also make sure that the input source on your monitor is set to the correct input. Most monitors normally auto-detect the input source, but sometimes this feature can become disabled.
Press the buttons on your monitor to bring up the options and go to Input and switch to the correct input. I would try system restore or automatic repair first and if neither of those work, then try resetting your PC. Resetting your PC will preserve all your programs and data, but reinstall the Windows system files.
The last step is to take a look at the actual hardware. Before you do anything else, you should try disconnecting all devices and peripherals from the computer like the keyboard, mouse, external hard drive, speakers, printers, scanners, etc. Sometimes a problem with another piece of hardware can cause the display to go blank.
Most of the time, they will tell you to simply replace your graphics card. If you are a bit technically savvy, you can try to open up your computer and check to make sure everything is connected or seated properly. You should have already checked the RAM using the article I mentioned above, but you should also make sure the fan on the video card is running.
The only other issue at this point is your motherboard or hard drive. If you have any questions, feel free to comment. Founder of Online Tech Tips and managing editor.
He began blogging in and quit his job in to blog full-time. He has over 15 years of industry experience in IT and holds several technical certifications. Read Aseem’s Full Bio. We will never spam you, unsubscribe at any time. Table of Contents. Subscribe on YouTube! Did you enjoy this tip? If so, check out our very own YouTube channel where we cover Windows, Mac, software, and apps, and have a bunch of troubleshooting tips and how-to videos.
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How to Fix a Windows 10 Black Screen Issue? (Multiple Solutions).How to Fix Black Screen of Death in Windows 10 | AVG
Every laptop comes with ports such as the HDMI port to allow you to use the computer on a separate and bigger screen to work. If you are still not sure whether there’s something wrong about your laptop’s graphic adapter, then the easy way to check it by connecting an external monitor with the computer.
If that doesn’t work, then check out the next solution. But if this solution work, then you should consult a technician to fix the fault with the screen’s hardware. If your laptop is showing a blank screen, but the hard drive seems to be functional, then you could fix the blank screen issue by recovering the BIOS using the keypress combination.
It is the method of recovering the last working version of the laptop’s BIOS. Here is the process:. The only thing left to do after that is reseating the RAW or the memory module of the laptop. Here is the method:. Also, you may want to know how to fix unbootable Windows 7 caused by a black screen. If you lose any data stored inside the laptop after performing the solutions mentioned above or under any other situation, then that data is easily recoverable, thanks to the high-efficiency recovery rate of the Recoverit Data Recovery tool for Windows.
Check out some valuable features of the tool before learning the method to perform quick data recovery:. A black desktop screen may also indicate that it has reached its end-of-life span due to factors like moisture or high levels of humidity, or failed electronics within the monitor.
To enter Safe Mode while your screen is black, press the power button on the computer and reboot the machine. Repeat this process three times to trigger the Automatic Repair function or Diagnostics Mode.
Next, click Advanced startup menu and click on the Troubleshoot option. Reboot your computer to complete the setup and check whether you can see your desktop. In the Device Manager window, click on Display Adapters , right-click your video card and select Uninstall. Press OK to complete the uninstallation. Browse through the device manufacturer’s support site and contact them for further help. It may be that your system’s projection settings are set incorrectly.
For example, your display might be set to project on a second screen that doesn’t exist, thus causing your monitor to show a black screen. While the first is the default, yours might not be set to it. Press P to highlight the next option and Enter to select. Repeat this four times to get back to the original setting, though hopefully one of the settings along the way will bring your display back.
To reinstall display drivers, you’ll need to boot into safe mode. The method you need depends on various factors, so follow the appropriate steps below and then continue reading to discover how to reinstall your display drivers.
Download Windows 10 or Windows 11 from Microsoft and then use this to create installation media. If you need help on that, see our guide on making a bootable ISO.
You then need to set the boot order in the BIOS to read your installation media first. If the monitor still displays a black screen or displays a No signal message, the video hardware may be faulty and needs to be replaced or serviced.
If the monitor displays the first startup screen but then goes blank, continue to the next step. Step Change the display resolution Use 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. Right-click Start , and then select Shut down or sign out.
Press the Shift key while you click Restart. Click Troubleshoot , and then click Advanced options. The computer restarts, and then a screen displays with a list of options you can enable or disable. Press the 3 or F3 key to enable low-resolution video. Connect the original monitor and change the display resolution to match the default setting for the monitor.
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. Press the Left Arrow key, and then select the File tab. Step Replace the graphics card or have the hardware serviced If 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. Select a location. Europe, Middle East, Africa. Asia Pacific and Oceania. Select a language. Right-click Start and select Device Manager. Go to the problematic device driver usually drivers like display adapters , network adapters , or sound , video , and game controllers.
Click Yes to confirm. Check out our ultimate guide on finding and updating device drivers. If you want to update your drivers immediately and keep them updated automatically, get AVG Driver Updater and run a free scan. If the black screen of death happens after you log in you enter your password and then everything goes blank , you can still find the cause of the black screen using one of the solutions below.
If the black screen prevents you from getting to Task Manager, follow the advice above on how to boot into Safe Mode. In Task Manager, go to Startup and disable every item. Reboot your computer, and check that everything works normally. Check Task Manager as part of regular PC maintenance.
The program explorer. In Task Manager, click File , and select Run new task. Type explorer. Your desktop should now reappear. To fix this, you need to edit the Windows Registry — the heart of the Windows operating system. Before you make any changes, create a backup of your PC or system restore point.
You can also use a specialized registry cleaning tool to clean up and repair any broken registry items on your Windows PC. First, hold down the Windows key and press R. In the Run box, type in regedit. Hit Enter. On the right side of the screen, double-click Shell.