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Samsung Galaxy S7 can no longer turn on after updating to Android Nougat [Troubleshooting Guide]

When a powerful phone like the Samsung Galaxy S7 won’t turn on, it’s possible that it’s an issue with the hardware, however, we’ve encountered cases wherein such issue was caused by a firmware problem. This problem can also be confusing because some of the owners may misunderstand booting up with turning on. So, I just want to make a clear distinction before we proceed with our troubleshooting. A phone that won’t turn on means it doesn’t power up but if it won’t boot up, it actually still has power but can’t continue loading the firmware or the operating system.

In this post, I will walk you through in troubleshooting your Galaxy S7 that no longer powers up after a firmware update. We will try to consider every possible reason why the problem occurs as well as possible causes or triggers that may have contributed to the development of the problem. So, if you own a phone like this and are currently bugged by a similar problem, then you should continue reading to know what to do.

But before we jump right into our troubleshooting, if you have other issues with your phone, make sure to drop by our troubleshooting page for we have already addressed hundreds of problems with this device since it was released. Find issues that are similar with yours and use the solutions and/or troubleshooting guides we suggested. If they don’t work or if you need further assistance, feel free to contact us by filling up our Android issues questionnaire.

Troubleshooting Galaxy S7 that won’t turn on after Nougat update

Many users have been anticipating for the roll out of Android 7.0 Nougat update for the Galaxy S7 and when it was finally made available, some issues occurred and that’s what makes it more frustrating. The following is one of the most common problems users encountered after updating their phones. Read on to know how the problem occurs and learn how to troubleshoot your phone…

Problem: Hello guys, i badly need your help. My phone has been with me for more than a year now and I’ve already updated it a lot of times but this is the first time that it happened–it won’t turn on now. This happens after an update and the update was, I think the Nougat. My phone is a Galaxy S7 and as I said I never had any issues with it since day 1 until a few days ago after the update. Can you help me?

Troubleshooting: The purpose of this troubleshooting is to determine whether the problem is simple in nature and whether or not it can be fixed without any help from a technician. We will try to rule out one possibility after another until we arrive at the point where we can tell exactly what the problem is. Now, here’s what you need to do for this problem:

Step 1: Perform the Forced Reboot procedure

For issues you really don’t know the cause, this must be the first thing you have to do as it addresses glitches on both the firmware and hardware. It is a simple procedure but very effective in dealing with almost all issues that occurred out of the blue. All you gotta do is press and hold the Volume Down and Power keys together for 10 seconds. You can do it regardless whether the phone is powered on or off.

It has the same effect as pulling the battery out of your phone but the only difference is that you’re not physically removing the battery from your S7 as it has a non-removable battery. When both the Volume Down and Power keys are pressed and held for 10 seconds, the phone will simulate battery disconnect, hence, refreshing your device’s memory.

There is a chance the problem will be fixed by this procedure so you have to do it before anything else. On the other hand, if the device still refuses to turn on or reboot after doing this procedure, then move on to the next step.

Step 2: Charge your phone and do the Forced Reboot

It’s possible your device’s battery got drained totally and that it crashed, somehow. That could be the reason why it won’t respond even if you plugged it in, if you did. So, in this step, try putting your phone on charge and then press and hold the Volume Down and Power keys together again for 10 seconds. If it still won’t respond, leave the phone to charge for, at least, 10 minutes and do the same thing. If still no, then move on to the next step.

Step 3: Try booting your phone up in Safe mode

After steps 1 and 2 failed, it’s time you try to boot your Galaxy S7 in another environment and in this step, we’ll try the Safe mode. In this environment, the Android interface will be loaded together with all built-in apps and services and all third-party apps will be temporarily disabled. This is how you do it:

  1. Turn your Galaxy S7 off.
  2. Press and hold the Power button.
  3. Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  4. Continue holding the button until the phone finishes rebooting.
  5. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.

The moment the phone turns on its screen to boot into this mode, we’re already halfway to fixing the problem. So, assuming booting in safe mode is successful, the next thing you need to do is find the app that’s causing the problem and try to reset, update and/or uninstall the app you suspect is causing the problem.

How to clear app cache and data on Galaxy S7

  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 data and then tap OK.
  7. Tap Clear cache.

How to update applications in your Galaxy S7

  1. From any Home screen, tap the Apps icon.
  2. Tap Play Store.
  3. Tap the Menu key and then tap My Apps. To keep your apps automatically updated, tap the Menu key, tap Settings, and then tap Auto-update apps to select the check box.
  4. Choose one of the following options:
    • Tap Update [xx] to update all applications with updates available.
    • Tap an individual application and then tap Update to update a single application.

How to uninstall apps from your Galaxy S7

  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: Try booting your Galaxy S7 in Recovery mode

Even if your phone has a serious firmware issue, as long as it’s not modified in any way, it may still be able to boot up in Android system recovery environment or Recovery mode. Our problem right now is that the phone won’t power on or won’t respond to whatever it is you do, so if your S7 boots up in this mode successfully, then we are near to fixing the problem.

If successful, you can actually do a couple of procedures that might fix the issue such as wiping the cache partition and doing the master reset. I will now give you the steps on how to boot your phone in recovery mode and wipe the cache partition and master reset.

How to boot in Recovery mode and wipe cache partition

  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 device logo screen displays, release only the Power key.
  4. 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).
  5. Press the Volume down key several times key to highlight ‘wipe cache partition’.
  6. Press the Power key to select.
  7. Press the Volume down key to highlight ‘yes’ and press the Power 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.

How to boot in Recovery mode and do the Master reset

  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.

If the problem still remains after all this, i.e. the phone refuses to turn on, then it’s time  you bring it to the shop and let the tech check it for you.

How to troubleshoot your Galaxy S7 that refuses to turn on

Here’s another issue similar to the one we tackled above. The difference is that the user was the one to turn it off to charge but when he tried turning it on, the phone didn’t power up.

Problem: I switched off my phone to charge it and was fully charged to 100% but when I tried switching back on I couldn’t Power it up. Its Samsung Galaxy S7 I tried to reboot but nothing, it’s like completely dead.

Solution: In this type of issue, there are some factors we should consider to know why the device is unable to turn on. As you said that it refuses to boot up after charging, there is a chance that a glitch in the system caused it. On the other hand, if you’ve downloaded an app before the issue started, the that could be a reason as well that your phone is unable to power up. So, what we’re gonna do now is to rule out every possibility by following the step-by-step troubleshooting guide below:

Step 1: Try to Soft reset your phone

If you launched several apps simultaneously and the system could no longer handle all of its tasks, that could be one of the reasons that firmware is crashing and became unresponsive. Through force reboot we will bring back the memory of the gadget to its normal state or be refreshed and close those unnecessary applications that runs in the background. So, if it boots up after the method, then it is just a glitch in the system caused it. Here’s how to do it:

  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.

Step 2: Boot it in Safe mode

Assuming that the device boots up normally, the next thing that we gonna do is to restart it in safe mode. In this method, the downloaded applications will be prevented from running and only the pre-installed apps will run in the system. So, if your phone powered on and without an issue, then obviously there’s an app you need to find and uninstall it.

  1. Press and hold the Power key.
  2. As soon as you can see the ‘Samsung Galaxy S7’ on the screen, release the Power key and immediately hold the Volume Down key.
  3. Continue holding the Volume Down button until the device finishes rebooting.
  4. You may release it when you can see ‘Safe mode’ in the bottom left corner of the screen.

Step 3: Delete the System Cache partition by starting in Recovery mode

In this instance, if the device still unable to turn on after safe mode, we suggest that you should boot your phone in Recovery mode. The purpose of doing this is to power up the components inside to verify if all of it are functioning well. Also, through this method the files saved in the cache directory will be deleted and replaced by newer caches. Here’s how to do it:

  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 device logo screen displays, release only the Power key.
  4. 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).
  5. Press the Volume down key several times key to highlight ‘wipe cache partition’.
  6. Press the Power key to select.
  7. Press the Volume down key to highlight ‘yes’ and press the Power 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.

If the device is still unresponsive or unable to turn on, then you don’t have a choice but to bring it to the nearest shop in your area to be checked by the tech because the device might have a hardware problem.

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