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How to fix Samsung Galaxy S7 Edge that won’t turn on [Troubleshooting Guide]

The new Samsung Galaxy S7 Edge (#Samsung #GalaxyS7Edge) has just been out for barely a week now but there were already owners that complained about the device not turning on or unresponsive with a black screen. We understand how frustrating that could be considering it’s a premium Android smartphone and is very expensive. That’s the reason why we publish posts like this to help our readers deal with this specific problem.

Galaxy-S7-Edge-black-screen-wont-turn-on

Among the symptoms you may encounter when this problem happens to you are…

  • Galaxy S7 Edge won’t respond when you press the power key
  • The screen remains black no matter what you do
  • LED indicator shows you have unread messages or notifications but the screen stays black
  • You may hear the phone play its ringtones but still unresponsive
  • You can call your number but the Galaxy S7 Edge doesn’t display the usual “Calling…” screen
  • It has turned off and won’t turn back on

Before troubleshooting, let’s try to take a look at all possible causes of this problem…

  • System has crashed leaving the phone unresponsive
  • Some apps have crashed and affected the system
  • Battery has been depleted
  • Power button is stuck or damaged

Hi guys! My 3 days old Samsung Galaxy S7 Edge won’t work. It won’t turn on when I press the Power button, the screen is black, although sometimes there’s light at the top of the screen. I upgraded from Galaxy S5 to Galaxy S7 Edge thinking this is a superior device but it seems I was wrong. Please help me fix this problem or should I have it replaced?

Just before we jump into our step-by-step troubleshooting, if you have other concerns with this new phone of yours, visit our S7 Edge troubleshooting page as we may have already addressed your problem. Should  you need further assistance, do not hesitate to contact us by completing this form. Please provide all necessary information about the problem so that we can easily help you and provide you with an accurate solution.

Step-by-step Troubleshooting

First off, if your device is still a few days old, you are eligible for a replacement if the problem can’t be fixed by a technician. But it means that you have to go through the hassle of possibly lining up at the local store to have an appointment with a technician and wait for several minutes before being able to talk with another representative to give you the new unit. In a bid to save you from all that, I’ve outlined a troubleshooting procedure below to help you make your device work again…

Step 1: It might just be a system crash and a Forced Reboot is necessary

This is the first thing you should do. It’s easy and it’s safe. It’s an equivalent to the battery pull procedure for devices that have removable battery.

If it’s a system crash or a minor firmware or hardware glitch, then this procedure should fix it:

  • Press and hold the Volume Down and Power keys together for 7 to 10 seconds or until the device reboots.

The device will perform the simulated battery disconnect if it’s done successfully and if it still has enough battery to power up its components.

Step 2: It might have ran out of battery, so put it on charge

If the first step failed, then it’s time plugged the phone in to charge even if you know the phone has enough battery left because you’re not just actually trying to replenish the battery, you’re also trying to find out how the phone reacts if it detects current flowing through its circuit.

Plug the charger in and leave it be for, at least, ten minutes; there should be enough battery to power it up if it indeed ran out of battery.

While it’s plugged in, try to see if the LED indicator lights up. It doesn’t matter what the color is as long as it’s lit up, the device should be ok.

Another thing you have to check is if the screen displays the usual charging icon. Powered on or off, the charging icon should be displayed on the screen when it’s connected to the power adapter and there’s current flowing.

If none of these indications show, then there’s something wrong with the phone. Proceed to the last step.

Step 3: If the phone charges fine, try booting it in safe mode

Assuming that the device showed all the charging signs when you plugged it in, it’s time you tried booting it in safe mode to temporarily disable all third-party apps and services that may have caused this problem. But before doing so, I want you to try to do the procedure in step 1.

  1. Press and hold the Power key.
  2. As soon as you can see the ‘Samsung Galaxy S7 EDGE’ 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 4: If the safe mode failed, try booting it in recovery mode

The purpose of this procedure is to know whether the phone is still capable of powering all its components up. In recovery mode, Android interface won’t be loaded during boot up but all hardware will be powered up. If the Galaxy S7 Edge can successfully boot up in that mode, then it’s more of a firmware issue than a hardware one.

Step 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.

Step 2: When the Samsung Galaxy S7 Edge shows on the screen, release the Power key but continue holding the Home and Volume Up keys.

Step 3: When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.

If the phone won’t respond after pressing and holding the Home, Volume Up and Power keys, then proceed to the last step.

Step 5: Get technical support or have the device replaced

You have no other option but to go to the store or your provider and have the device checked by the technician. If the tech can’t fix the problem, too, then you are going to received a brand-new replacement unit as long as you’re within the grace period (usually 15 days since date of purchase).

Having problems with your phone that won’t turn on?

We can help you troubleshoot. We already published troubleshooting guides for the following devices:

If you have problems or concerns, do not hesitate to contact us by filling up this questionnaire. You may also visit our troubleshooting page for the S7 Edge as we list down every issue we address each week.

54 Comments

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  1. Thank you so much for your help! I was ready to give up and go to the Sprint store but decided to look up how to fix it when it it won’t turn on. Again, thanks so much!

  2. my phone is not responding. it frizzed and turned off itself. now I cannot turn it on back 🙁
    I do not know what happened. why?

  3. had my phone since October 2016 (company phone), had nothing but problems with the thing, now I have a completely black screen, totally unresponsive, tried all of the above steps. Have already gone a full factory reset, used it in safe mode and still the thing dies on me. Hopefully now Vodaphone will replace it as I am totally fed up. Beginning to really hate Samsung S7 Edge with a passion. My personal S6 works a dream.

  4. Phone would ot charge. No Charging light off standard Samsung charger that came up with phone that always works with it. Tried off a PS4 and laptop, too, making sure it was not a device or cable related issue.

    1)Tried the reboot, brought up “Android updating” screen, but it the showed a screen showing it was crashing.
    2)Phone turned off, and I was able to restart it with the Volume down and Power and selected “Safe mode” and pressed the power button.
    3) It is now just blinking blue and green (for 3 hours+ now), not responding to any power or combination of power and vol down;; tried the power and up, tried the power up, home, and vol up… NOTHING.

    HALP

  5. Thank-you so much! I was just about to take my phone into the shop, but I found this article and it worked!

  6. Thank you soooo much! I was certain the phone wasn’t going to wake up ever again!!! You fixed it so easily!!!

  7. Step 1 worked (volume down and power)! My phone froze and then turned itself off and wouldn’t turn on at all. Can’t believe it was that simple! Thank you

  8. Thanks! Needed to Force Reboot.

    Had phone for year – first time it happened.

    We live and learn.

    Great Service – keep it up.

  9. First my 2 months old phone had a pink line on the edge (God know reason why) I just got a new replacement phone from store yesterday and today it turned to black screen and thought my phone was dead and my temper is about to hit the roof from this frustration. Suddenly found your article and it worked well, phone back alive again. thank you so much really appreciate your advice.
    Kan

  10. Thank you so much. I had the black screen with red light and the first step Alt+VolumeDown for 7secs solved the problem.
    You’re doing a great job!

  11. 1 step working, thanks a lot guys

  12. I’ve never had just the samsung flashing on screen and an unresponsive phone (S7Edge – Duos). Step 1 worked perfectly. Thank you

  13. I try the first step failed, then i charged also still failed, so how it will be now? the led light indicator still lighting. Can you me please? Thank in advance

  14. Hi fantastic really helpful I had a black screen, thought my phone was dead, search online came across your article and it worked, phone alive again. thank you so much really appreciate your help
    kind regards Allison
    samsung galaxy edge 7s

  15. My phone just blinked out on me while I was on a conversation. I was trying to go to another screen (google email) while talking using the speaker. It would not change screens. So instead, it just shut off and did not come back on with the power button. Thanks to you, this 1st Step that you’ve provided “WORKED!” Thank you so much, The Droid Guy. It was an easy fix.

  16. very helpful.I just opened my s7 edge yesterday and just returned home from office .found the black screen and was terrified .This Article helped me resolve the issue .

    By just using power and Alt key method mentioned in step 1.

    Once again many thanks for the help

  17. Dude i thought my phone´s dead my father then asked me to read some forums. it was simply a system crash. you saved my life

  18. Thanks, it helpful. tried below steps for my device : Press and hold the Volume Down and Power keys together for 7 to 10 seconds or until the device reboots.

  19. Fantastic…..all it took was step 1 and I was back in business. Thank you for your help!!

  20. Omg thank you soooooooooo much you saved me i dont know how to thank you saving my very expensive s7 edge that i worked for it 6 months to get it… i was about to cry love you so much… … STEP 1 saved me

  21. Wow thank you! I had my phone screen go black and could tell it was a system crash/lock up. Not being able to pull the battery made it hard but by reading only Step 1 I could get it back online again! Thank you TDG!

  22. Wow. You guys are the greatest….!!! Thanks for helping. I was dreading going to T-Mobile for this. It worked it really worked…

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