How to fix Samsung Galaxy S8 that’s unable to turn on or has Black Screen of Death (easy steps)

More often that not power-related issues in Samsung Galaxy S8 are caused by a software problem wherein the system stops functioning normally and may later on result to crashes. When this happens, your phone may turn off and would no longer respond and you would have to deal with the Black Screen of Death issue. Aside from the display, everything else would be unresponsive and the phone won’t power up no matter what.

In this article, I’ll discuss why your Galaxy S8 is misbehaving like this. First, I will give you the solution that we’ve used in so many cases before and we’re confident of its effectiveness. However, since not all issues are the same, there could be cases wherein the problem won’t be fixed by this solution so I also prepared a troubleshooting guide for you to follow. Continue reading this article as it may help you bring the phone back to life.

Should you have other issues with your phone, feel free to visit our Galaxy S8 troubleshooting page for we have already addressed a lot of problems before and odds are that there could already be issues that are similar with yours. If you need further assistance, fill up our Android issues questionnaire and hit submit to contact us.

How to fix Galaxy S8 that won’t turn on or has BSoD

If you’re an owner of a phone like the Galaxy S8, you should be the first one to know if it suffered physical and / or liquid damage. Should the problem like Black Screen of Death (BSoD) occurred without apparent reason or cause, then you can rest assured that you can fix it without having to do very complicated stuffs or bringing it to the service center. In such case also, the following solution should work without a hitch and your phone may boot up normally again in no time. So, without further adieu, this is what you’re going to do about this problem:

  • Press and hold the Volume Down button and the Power key simultaneously for 10 seconds.

If this problem started due to a firmware crash and provided there’s enough battery left and that there’s no issue with the hardware, then your phone should boot up normally after doing this. However, if it fails to bring your phone back to life, try this…

  1. Press and hold the Volume Down button first and don’t let go.
  2. Press and hold the Power key while holding down the volume down button.
  3. Keep both keys held down for 10 seconds.

If it fails as well, then there’s a chance that battery was all drained up. Here’s the best thing you can do about it:

  1. Plug the charger to a working wall outlet.
  2. Connect your S8 to it using its original USB / data cable.
  3. Regardless whether the phone shows the charging symbol or not, let it charge for 10 minutes.
  4. Now do the Forced Restart procedure once again but this time while the phone is charging.

If all these procedures failed to make your phone power up, then we have to dig more into the problem to know what it really is all about and learn how to fix it. Continue reading below so you would be guided on what to do next.


Troubleshooting Galaxy S8 that won’t turn on

Troubleshooting isn’t easy so I understand that some of you may be hesitant to do some procedures you may not understand. If you’re one of them, I suggest you bring your phone to the service center so that a Samsung tech can take a look at the problem and do his testings. However, if you’re one of the owners who are willing to try some methods that may help bring the phone back to life, then continue reading as this article may help you.

Look for signs of Physical and/or Liquid Damage

First off, look for signs that your phone is suffering from physical damage. For instance, if the phone got dropped on a hard surface and then this problem started, then the drop should have left a mark on the outside case of the phone. Any force that will render the phone useless or mess up some of its components inside should leave a visible and noticeable mark. Look for scratches, dents and cracks and if you can find some, then there’s no need to continue your troubleshooting, instead bring the phone immediately to the service center as there’s only so much we can do if a component inside is damaged.

When it comes to liquid damage however, it’s a bit more complicated because unlike physical damage, you may not find any signs. But try to do these things to make sure:

  1. Look into the USB/charger port to find out if there’s moisture in there.
  2. Use a cotton swab to clean the area or you may insert a small piece of tissue paper to absorb the moist.
  3. Check the Liquid Damage Indicator (LDI) located inside the SIM slot to know if it’s tripped or not.
  4. If the LDI is still white, there’s no liquid damage but if it turned red or purple, then it’s positive that water or any sort of liquid found its way into the phone despite having IP68 rating.

For liquid damage, bring the phone to the service center as well.

Try running the phone in Safe mode

After making sure there’s no liquid damage, you should try running the phone up in Safe mode to know if it’s capable of doing so. In case it successfully boots up into this environment, there’s a possibility that an app has prevented your phone from booting up normally. So, follow these steps to try and run your S8 in safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name 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.

Assuming the phone successfully starts into this mode, you can already consider it fixed since it finally powered on. But the next thing you should do is find the app that’s causing the problem and then uninstall it to finally fix the problem.

  1. From the Home screen, swipe up on an empty spot to open the Apps tray.
  2. Tap Settings > Apps.
  3. Tap the desired application in the default list or tap 3 dots icon > Show system apps to display preinstalled apps.
  4. Tap the desired application.
  5. Tap Uninstall.
  6. Tap Uninstall again to confirm.

However, if the device is still not turning on after this, then try doing the next step.

Attempt to boot the phone in Recovery mode

Since your Galaxy S8 refused to turned on in safe mode, the last thing that you should do is to reboot it in recovery mode. The Android system recovery mode is actually the fail-safe of almost all Android devices which means that even if the device has a serious issue with the software for as long as the hardware is fine, it should still be able to run into it.

So, try starting your phone up into the Recovery mode and if successful, wipe the cache partition and then try to reboot. If there’s booting issues or if the reboot would still result to black screen, you should go back and do the Master reset.

How to boot S8 in Recovery mode and wipe cache partition

  1. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  2. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  3. Press the Volume down key several times to highlight “wipe cache partition.”
  4. Press the Power key to select.
  5. Press the Volume down key to highlight “yes” and press the Power key to select.
  6. When the wipe cache partition is complete, “Reboot system now” is highlighted.
  7. Press the Power key to restart the device.

How to boot Galaxy S8 in Recovery mode and do the Master reset

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the green 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.

I hope that this troubleshooting guide can help you one way or another. If however, the phone still won’t respond when you try starting it up in recovery mode, then it’s time to bring it to the service center as it’s a sign of a more serious issue.

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