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Samsung Galaxy S7 won’t restart after Nougat update and now has black screen [Troubleshooting Guide]

Performance related concerns have been haunting many of the Samsung Galaxy S7 owners and we even received a lot of complaints after the recent Android Nougat update. Among the problems we received is an issue wherein the phone refuses to restart or turn off and the owner can’t do something to make the device work because it’s either has a black screen or unresponsive.

In this post, we’ll tackle this problem once again for the benefit of our readers who contacted us about it. We’ll try to look into every possibility that may have led to the problem and rule out each of them until it would be clearer for us to know what the cause really is and what needs to be done to fix the issue. If you own a Galaxy S7 and are currently bugged by a similar concern, continue reading below as this article may be able to help you.

Now, before anything else, if you have other issues with your phone, make sure you drop by our Galaxy S7 troubleshooting page for we have already provided solutions to hundreds of problems reported by our readers. Odds are that we may have already provided a solution to the problem you currently have so try to find issues that are similar with yours on that page and feel free to use the solutions we suggested. If they don’t work or if you need further assistance, fill up our Android issues questionnaire and hit submit to contact us.

How to troubleshoot Galaxy S7 that won’t restart after an update

Problem: My Galaxy S7  won’t restart after a software update. It installed the software and when it went to restart it got stuck on the black screen with the unlocked lock on it. Sometimes it will turn onto the lock screen to type in the password I chose to protect my phone’s data, but will quickly change to a black screen with a progress bar that never fills and “installing applications.” above it. this cycle has happened about 6/7 times never allowing full access to the phone. I have used the troubleshooting ideas short wiping the phone a I haven’t backed up my data with no luck.

Solution: Most of the time, this type of issue occurs if the files and data of your phone had been outdated or corrupted during the update process. As you said that it reboots several times and stuck in the logo afterwards, meaning, that the firmware may be crashing and that’s the reason that your device could not boot up successfully. But nothing to worry about it, this issue can be fixed through performing the simple procedures without the help from the technician. Here are the methods that you should do:

Step 1: Try to force reboot the device

If the system is crashing that would be the reason that your phone is unable to boot up and reboots without apparent reason. So, by doing forced reboot all glitches in the system will be eliminated as well as it refreshes the memory of the phone. To do this, follow these steps:

  1. Press and hold the Volume Down and Power keys together for 10 seconds.
  2. The phone will reboot successfully provided that it was just a system crash and that there’s enough battery left.

After the force reboot procedure try to see if the issue is resolved. If so, then obviously a glitch in the system caused the issue. But if not, you can continue troubleshooting the device by following the next method.

Step 2: Boot it in Safe mode

This time, we have to check if your phone is able to boot up without loading  all third-party apps from the system. Meaning, only the pre-installed ones will be running in the system. But  if it boots up normally there’s a chance that a culprit triggered the issue. You can begin uninstalling every app you downloaded starting from the recent one you installed until the issue will be fixed Here’s how to boot it in safe mode:

  1. Press and hold the Power key.
  2. When Samsung Galaxy S7 logo appears, release the Power key and immediately hold the volume down key.
  3. Continue holding the Volume Down key until it finishes its rebooting.
  4. When “Safe mode” appears on the screen immediately release the Volume Down key.

But while in safe mode and after deleting all suspected apps and the issue still happening you can move to the next method for there might be a serious problem on your phone.

Step 3: Wipe the System Cache partition of your phone

System caches are files stored in the directory that your phone is using in order for the firmware to run smoothly and efficiently. So, if these caches are corrupted during the update and conflict the system, that would be the reason that issues occur out of the blue. In fact, clearing the cache directory from time to time is advisable to all users especially after the upgrade to make sure that all files are compatible to the new system. So, if the issue is triggered by corrupt caches this method will surely fix it.

  1. Turn off the phone.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it..
  8. Wait until your phone is finished wiping the cache partition.

Step 4: Reset your phone

Take note that resetting the device will be your last resort you should do on your phone if all procedures doesn’t fix the issue. If so, then your phone might have a serious firmware problem. In doing the reset the firmware won’t be deleted, instead, only the files and data you saved on your phone as well as the apps you downloaded from Play Store will be wiped out from the system. Meaning, it will bring your device back from scratch like the first time you bought it from your retailer or carrier. But before you follow the steps make sure you backed up all your important files by transferring it to the SD card or computer because it will be deleted. This is how to reset your phone:

  1. Press and then hold the Home and Volume UP keys, then press and hold the Power key. NOTE: It doesn’t matter how long you press and hold the Home and Volume Up keys, it won’t affect the phone but by the time you press and hold the Power key, that’s when the phone starts to respond.
  2. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  3. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds. NOTE: The “Installing system update” message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.
  4. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  5. Once highlighted, you may press the Power key to select it.
  6. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  7. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  8. The phone will now reboot longer than usual.

I hope this works.

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