How do you fix a blank computer screen –
If your monitor is getting power, but no image appears, the data cable may be the issue. If you can view your monitor’s settings menu even though the screen is blank, you likely need to turn up the brightness and contrast. If the computer was on when the screen went black, something may have happened that requires the computer to be reboot. To reboot a computer when you cannot see anything press and hold the power button until the computer turns off.
You can tell a computer is off when it has no lights and the fans are not spinning. Once the computer is off wait a few seconds and then turn the computer back on by pressing the power button. If the computer doesn’t pass POST , it won’t turn on or be responsive, and your monitor remains black. If you hear beeping when you turn on your computer or see strange lights, run through the POST troubleshooting steps to determine the issue. If you have followed the recommendations above and still no picture appears, your computer may have either a bad monitor, video card graphics card , or motherboard.
The best method of determining this is to try the suggestions below. If another monitor works on your computer, it’s safe to assume the non-working monitor is bad and should be replaced. 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. Check that the Value data section reads explorer.
If this field is empty or something else is there, enter explorer. If something else is written in the Value data section, it could be a virus, malware , or some other potentially unwanted program. To find out, Google the name of the program and do some research. Then, it will delete the malware and set up defenses to detect and block any future signs of trouble. Get it for Android , iOS , Mac. Get it for Mac , PC , Android. If your computer screen keeps going blank seemingly at random, the cause of the black screen of death might be your graphics driver.
Check out our detailed instructions on how to update your graphics drivers and our guide to monitoring GPU performance. When you see a blank screen, hold down the Windows key on your keyboard and press P. After the power is completely off, turn on your PC and test to see if it will boot normally. Troubleshoot the cause of the beep code if you’re lucky enough to get one.
A beep code will give you a very good idea of exactly where to look for the cause of your computer turning off. Clear the CMOS. If clearing the CMOS does fix your problem, make sure any changes you make in BIOS are completed one at a time so if the problem returns, you’ll know which change caused your issue. Verify that the power supply voltage switch is set correctly. If the input voltage for the power supply isn’t correct, then your computer might not turn on completely.
There’s a good possibility that your PC wouldn’t power on at all if this switch is wrong, but an incorrect power supply voltage might also prevent your computer from starting properly in this way, too. Reseat everything possible inside your PC. Reseating will reestablish the various connections inside your computer and is very often a “magic” fix to problems like this one. Verify that all the cables are connected correctly. For example, if the onboard video card has been disabled, plugging a VGA cable into it will result in nothing on the monitor even if the computer is powered on.
In this case, you’d want to plug the VGA cable into the correct video card. Try reseating the following components and then test if your computer displays something on screen:.
Reseat the CPU only if you suspect that it might have come loose or might not have been installed properly. We address this component separately only because the chance of a CPU coming loose is very slim and because installing one is a sensitive task.
Check for signs of electrical shorts inside your computer. If you find them, then you’ll need to investigate the causes of those electrical shorts. Test your power supply.
Just because your computer’s fans and lights are working doesn’t mean that the power supply is functioning properly. The PSU tends to cause more problems than any other hardware, and is often the cause of a computer’s components to work selectively or intermittently.
Replace your power supply immediately if it fails any test you perform. If the newly attached monitor displays initial startup screen s but then goes black, there is a problem with Windows starting. If the new monitor works , the original monitor or its cables are faulty.
Try connecting the monitor with a different video cable. If the monitor still does not work, replace the monitor power cable. Replace or service the monitor if it still does not turn on. Step 7: Inspect the video cable and video connectors for damage Inspect 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.
If your computer came with a graphics card, HP may have installed a plastic cover over the video port attached to the motherboard. Most PCs can use graphics from the graphics card or the motherboard, but not both at the same time.
The better solution is to connect an adapter to make the connection. Turn on the computer and repeatedly press the F10 key about once every second for eight seconds. Step 9: Reseat loose internal components If 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:. Be careful not to slide skin along any interior metal edge of the computer.
To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface such as a conductive foam pad , and wear an ESD wrist strap connected to a grounded surface. Unplug all cables except for the power.
Note each cable location if you do not already know where it connects. With the power cable removed press and hold the power button on the front of the computer for 5 seconds. Gently press down on the outside edges of cards and memory modules that are inserted into the motherboard to better seat them. Do not apply too much pressure. Replace the side panel and screw s , reconnect the computer cables, and turn on the computer.
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.
How do you fix a blank computer screen –
Force the display to wake up. Try a different monitor to check for a faulty video card.