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How to fix Samsung Galaxy S7 Edge with black screen of death after Nougat update [Troubleshooting Guide]

Some of our readers who own the Samsung Galaxy S7 Edge contacted us because shortly after they updated their device to Android Nougat, they encountered the black screen of death issue. It is when the display stays blank and unresponsive that no matter what the owner would do, the device stays dead, hence the name black screen of death (BSoD).

I will tackle this issue once again in this post to answer some of the inquiries of our readers. We will try to consider every possibility and rule out each of them until we arrive at a point wherein we can pinpoint what the problem really is and what needs to be done to fix it. So, if you own a phone like this and are currently bugged by the same problem, I suggest you read the rest of the article as it might help you fix the problem.

But before anything else, if you have another issue with your phone, drop by our S7 Edge troubleshooting page as we have already addressed hundreds of issues reported by the owners. Odds are that there are already existing solutions on our website or at least, there are similar problems we already fixed. So, try to find ones that are similar or related to your problem. If you need further assistance, however, feel free to contact us by filling up our Android issues questionnaire.

Step-by-step guide to troubleshooting Galaxy S7 Edge with black screen of death

The purpose of this troubleshooting guide is for us to know if this problem can be fixed without any help from a tech. Now, before we jump into our troubleshooting steps, here’s one of the messages we received from our readers that best describes this issue…

Problem: Hello guys. I have a problem with my S7 Edge and I hope you can help me. It got updated recently and I was actually able to use it after that but I noticed it wasn’t as responsive as it was. Yesterday, I don’t know if it turned itself off but the screen was black. I tried turning it on but it won’t so I tried charging it but it won’t charge either. Not sure what I have to do next. This is the first time I encountered this problem. Can you help?

Troubleshooting: The black screen of death issue is complex as it might be an issue with the hardware or it could also be an issue with the firmware. The course of our troubleshooting will be to rule out the possibility that it’s just a glitch and then we’ll move on to the next steps. That said, here’s what you need to do…

Step 1: Try to force reboot your phone

This might be the only procedure you need to do depending on how bad the problem really is. If it is due to a minor firmware issue brought about by the update, then this procedure can fix it. But then again, we have to consider the hardware side of it that’s why if this method won’t work, you have to continue troubleshooting your phone. Now, here’s how you force reboot your phone:

  • Press and hold the Volume Down and Power keys together for 10 seconds and wait for a minute to see if the phone reboots normally.

Step 2: Plug your phone in and try the force reboot

Let’s still assume the problem is just a glitch but your phone may have run out of battery. So, try to plug it in and leave it that way for 5 minutes regardless if it shows the charging signs or not. After which, press and hold the Volume Down and Power keys again.

If the battery was all drained out and the phone crashed, naturally it won’t respond to whatever you do with it. In this step, we’re giving the phone a stable power source and trying to refresh its memory with Forced Reboot procedure. If it still won’t respond after this, then move on to the next step.

Step 3: Attempt to boot your phone in safe mode

We will now try to rule out the possibility that the problem is caused by one or some of the apps your downloaded and installed. Let’s try to boot your phone in safe mode wherein all third-party apps will be temporarily disabled. If the problem is indeed caused by one of them, then your device should boot up in this mode successfully as only built-in apps and services are loaded during boot up. Here’s how you boot your phone in safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the Samsung Galaxy S7 edge screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.
  8. Uninstall apps that are causing a problem.

Assuming your S7 Edge booted up in this mode successfully, you need to find the app that’s causing the problem. There might be more than one app that’s causing the problem so  you have to deal with whatever app you suspect is the culprit. Try wiping the cache and data first and then try rebooting your phone in normal mode, if the problem remains, then uninstall the app.

How to clear app cache and data on Galaxy S7 Edge

  1. From any Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Applications.
  4. Tap the desired application in the default list or tap Menu icon > Show system apps to display pre-installed apps.
  5. Tap Storage.
  6. Tap Clear cache.
  7. Tap Clear data and then tap OK.

How to uninstall apps from Galaxy S7 Edge

  1. From any Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Applications.
  4. Tap the desired application in the default list or tap Menu icon > Show system apps to display pre-installed apps.
  5. Tap Uninstall.
  6. Tap Uninstall again to confirm.

Step 4: Attempt to start your phone up in Recovery mode

If your phone still remains unresponsive even if  you tried booting it up in safe mode, then you should try this. The Android system recovery environment is actually the fail-safe of any Android device as it allows you to perform procedures that will greatly affect the firmware. If your phone can successfully boot up in this mode, then you should try wiping the cache partition first. If that won’t work, then do the master reset.

Here’s how you boot your S7 Edge in recovery mode and wipe the cache partition…

  1. Turn off the device.
  2. Press and hold the Volume Up key, Home key, and Power key at the same time.
  3. When the phone powers on, the Android System Recovery screen appears approx. 30 seconds later.
  4. Release all of the keys.
  5. Press the Volume down key to highlight “wipe cache partition.”
  6. Press the Power key to select.
  7. Press the Volume down key to highlight “yes” and press thePower key to select.
  8. When the wipe cache partition is complete, “Reboot system now” is highlighted.
  9. Press the Power key to restart the device.

And this is how you do the master reset if your phone can successfully boot up in recovery mode…

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  3. When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key several times to highlight “wipe data / factory reset”.
  5. Press Power button to select.
  6. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  7. Press Power button to select and start the master reset.
  8. When the master reset is complete, “Reboot system now” is highlighted.
  9. Press the Power key to restart the device.

If all else fails, bring  your phone to the shop and let the tech fix the problem for you. The firmware may need to be reinstalled.

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