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Samsung Galaxy S7 won’t turn on after Android Nougat update [Troubleshooting Guide]

  • Read and understand why a premium smartphone like your #Samsung Galaxy #S7 can no longer turn itself back on after the #Nougat update and learn how to troubleshoot it when this problem happens to you.

Samsung Galaxy S7 black screen Nougat update

Firmware updates, while they’re important and helpful in addressing known issues, can sometimes bring problems instead of solutions. That’s what some owners actually felt when their Galaxy S7 started to act up shortly after they’ve updated their devices.

We’ve always been listening to our readers especially ones that have problems with their phones and there are already tens of thousands of problems in our inbox waiting to be addressed. In this post, however, I will be addressing an issue involving a Galaxy S7 that won’t turn on after an update. We may be able to speculate as early as now that it’s a firmware-related problem but we won’t be sure if we didn’t try to troubleshoot. After all, we have to know if there really is a problem or not and if there is, is it really due to a firmware issue or not?

We will try to look into the possibilities why this problem occurs in the first place. Let’s rule those possibilities out one after another until we reach the point that we can say what the problem really is, what it’s all about and what needs to be done to fix it. Continue reading so that you’ll learn the safe way to troubleshoot your phone that has this kind of issue.

But we before we proceed with our troubleshooting, if you have other issues with your phone, drop by our troubleshooting page as we’ve already provided solutions to hundreds of problems sent by our readers. It’s possible that your concern has already been addressed so try to find issues that are similar with yours and use the solutions we suggested. If they don’t work or if you need further assistance, then fill up our Android issues questionnaire and hit submit to contact us.

Troubleshooting Galaxy S7 that won’t turn on after Nougat

For a smartphone that doesn’t turn on, there’s only so much we can do to troubleshoot but let it not stop you from doing what needs to be done in a bid to fix the problem. Before we proceed to our troubleshooting steps, here’s one of the messages we received from our readers that best describes this problem:

Problem: Droid guy, I am hoping you guys can help me out with my problem. I have this Galaxy S7 phone, which has recently been updated but after the update, it just won’t turn on. I mean the screen just stays black and the phone not responding no matter what I do. What happened is that after the update, the phone turned itself off but it didn’t turn back on. I tried pressing the power key to no avail. Can you guys look into this issue and please help me fix my phone. Thanks.

Troubleshooting: The course of our troubleshooting should be centered on bringing the phone back to life. If we can bring the phone to turn on, then we’re already halfway there. This is what you should do to try to fix this problem…

Step 1: Forced Reboot your Galaxy S7

Your phone may have encountered a system crash that left it unresponsive. Before doing any other troubleshooting procedure, you have to rule this possibility out first. All you have to do is press and hold the Volume Down and the Power keys together for 15 seconds. Assuming your phone still has enough battery to power up its components, it should reboot provided the problem is as simple as a crash.

Step 2: Charge your phone

If your device didn’t respond after doing the forced restart, then it’s time to look into the possibility that its battery was totally drained. Plug in the charger to a wall outlet that you know works and then connect your phone to the charger. Leave it charging for at least 5 minutes; that should be enough to give the battery enough power to turn the device on. After 5 minutes of charging, attempt to do the forced reboot procedure. If the problem is due to a system crash and drained battery, then doing the forced restart procedure will surely fix the problem.

Aside from making sure the battery has enough power, charging your phone will also tell you if it’s still capable of doing such a basic function because if it’s not, then there must be something wrong with your phone. In which case, check if your device suffered from liquid and/or physical damage. The latter can easily be determined as it will leave dents and scratches, the former however, may require you to pull the SIM card tray out so you can look into the slot and check if the Liquid Damage Indicator (LDI) turned red, pink or purple.

I suggest you leave the phone charging for yet another ten minutes but this time be mindful to know if it’s heating up while plugged in or not because if it does, disconnect the charger right away and send the phone to a technician to have it checked carefully.

Step 3: Attempt to boot in Safe Mode

This procedure will rule out the possibility that the problem is caused by one or some of your third-party apps. When in safe mode, all third-party elements are temporarily disabled so if one of them is causing the problem, then the phone should be able to boot up in this mode without any issues. Here’s how you boot your device 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.

Assuming you were able to bring the phone to boot up in this mode, then you’re almost there. What’s left to do is to find the third-party app that’s causing the problem. Once found, try clearing its cache and data first and if that won’t work then you have to uninstall it.

  1. From Home screen, tap App icon.
  2. Tap Settings.
  3. Tap Applications and Application manager.
  4. Swipe to ALL tab.
  5. Find and tap suspected app.
  6. Touch the Force Close button first.
  7. Tap storage.
  8. Tap Clear cache and Clear data, Delete.

To uninstall an app from your Galaxy S7, follow the same steps and hit Uninstall.

Step 4: Try to see if the phone can boot up in Recovery Mode

When the booting up in safe mode didn’t work or if clearing the cache and data of suspected apps didn’t help, then it’s time to try booting the phone up in the Recovery Mode. The interface won’t be loaded but all hardware components will be powered up. We are simply trying to see if your device is still capable of powering up its components because if so, then there’s a big chance you can fix the problem by wiping the cache partition or doing the master reset. This is how you boot your phone in recovery mode:

  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.

How to wipe the cache partition

  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. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

How to Master Reset Galaxy S7

  1. Turn off your Samsung Galaxy S7.
  2. 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.
  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. 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.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

After all this and the problem remained, then seek assistance from a technician.

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