How to fix Samsung Galaxy S7 that won’t turn on (easy steps)

For several months we answered various of issues sent by our readers and among the most common are power-related problems. More often than not, it could be a temporary system crash or there were downloaded applications manipulating the firmware and preventing it from booting up successfully. In addition, if the battery is depleted, that could also be a reason why your phone won’t turn on.

So, in this post, I’ll walk you through to do the procedures that may help you figure out the reasons why your device shut down by itself without apparent reason and won’t turn back on. Although we addressed this problem several times already, for the benefits of other users who encountered this problem recently, we will have to discuss it again to shed light and to help them fix the issue if possible.

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.

Troubleshooting Galaxy S7 that won’t turn back on

It’s simple. If the phone got dropped on a hard surface prior to the problem, then it’s probably physical damage that caused the phone to turn off and won’t power back on. In other words, some components may have fallen off or got damaged after the drop. If you used your phone to take pictures underwater and then this problem started, there’s a possibility it’s due to liquid damage even if your device is water-resistant. However, if the problem started without apparent reason or cause, then we might be looking at a possible minor issue with the firmware and this is what you need to do if this is the case with your phone…

Do the Forced Restart on your Galaxy S7

One of the factors why the device became unresponsive and unable to turn on is due to a system crash. Meaning, the firmware and other services stopped working and triggered the device to become unresponsive even though there’s enough power stored in the battery. By doing the Forced Restart, the memory of your phone will be refreshed and all apps running in the background will be closed. It’s imperative that you do this method before anything else. To do so, just press and hold the Volume Down and Power keys simultaneously for 10 seconds and wait until it boots up.

If your phone turned on, then a glitch in the system caused it. For now, the problem is fixed but there’s no guarantee it won’t occur again in the future. However, if the phone remained unresponsive, move on to the next step.


Charge your phone for at least 10 minutes

If the battery is empty, obviously the device won’t power on and won’t respond no matter what you do to it. We suggest that you plug your phone in to the charger and leave it for 10 minutes to be sure there’s enough power stored in the battery.

However, if the problem is due to a system crash, your device may not show the charging icon on the screen and the LED indicator at the top of the screen may not be lit up but leave the phone charging. While the phone is plugged in, try to check if it’s heating up because if it does, disconnect it from the charger immediately. In this case, bring it to the service center so that the tech can check if up for you.

Assuming the phone isn’t heating up, try to turn it on after a few minutes of charging. Or, you may perform the Forced Reboot once again but this time while the device is connected to its charger. The system may have crashed while the phone was losing power.

Try to boot your device in Safe mode

If the first 2 steps failed to resolve the problem you can try booting up your phone in safe mode. The purpose of doing it is to narrow down the issue and verify if there’s an app that’s manipulating the system and preventing your phone from turning on.

  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.

If the phone started up successfully in this mode, you can consider the problem fixed since the phone finally turned on. But this confirms that the problem is due to a third-party app, so the next thing you should do is find the app that’s causing the problem and then uninstall it, here’s how you do that:

  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.

On the other hand, if the phone could also not boot up in safe mode, then try the next step.

Try starting your Galaxy S7 up in Recovery mode

If booting in safe mode didn’t help resolve the problem, you can try restarting your phone in recovery mode. Restarting it in this environment will  power up all hardware components without loading its interface. If it boots up normally in this mode, then, this is just a firmware problem and you can wipe the cache partition so that all system caches will be deleted and replaced with new ones. This is an effective method to fix firmware-related problems…

  1. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  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.
  4. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  5. Once highlighted, you may press the Power key to select it.
  6. Now highlight the option ‘Yes’ 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.

You may also try doing the Master Reset while in Recovery mode but bear in mind that all your personal files and data including your apps, photos, contacts, messages, etc. will be deleted and you will have to set up your phone like new after this…

  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 data / factory reset.’
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

After all these procedures and your phone still refuses to turn on, then it’s time to bring it to the service center as it might be a hardware problem.

I hope that this troubleshooting guide can help you one way or another. If you still need our help after this, don’t hesitate to contact us.

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