Galaxy Note 5 restarting over and over, won’t load to normal mode, other issues

Hello everyone! We bring you one more #GalaxyNote5 troubleshooting page to address some issues about this devices not being able to boot up, or remained powered on normally. We also cover the issue regarding Factory Reset Protection in this one so we hope you’ll find this an interesting post.

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: Galaxy Note 5 restarting over and over, won’t load to normal mode

Hi. Over the past several days my phone has been acting up, and now it is not working at all. My phone now continues to just restart over and over again, and I am unable to reach the home screen of my phone. About 4 days ago I was having this problem with SnapChat every once in a while, where the phone would randomly shut down and get into a loop of restarting. Eventually it would stop after about 5 minutes and I could use the phone again. However, today I turned it on at 85% to open up SnapChat, it turned off, got into its loop of restarting, but this time never got out. At first it would reach the home screen, last for a few seconds, then restart. But now it’s not even getting past the T-Mobile loading screen, sometimes not even past the first loading screen. There is no noticeable hardware damage, haven’t dropped it at all. There is potentially very minor water damaging from water accidentally spilling on it, but unlikely due to the low amount that has spilled on it.

I tried downloading firmware using your guide and Odin, but again no success. I tried a factory reset. Nothing seems to be working though. I do know that before all of this started happening, a ton of my apps were getting updated and an Android update seemed to have downloaded onto the phone. — Poet Larsen

Solution: Hi Poet. An issue like this can’t only be attributed to a software fault only. If reflashing and factory did not fix the problem, the most likely cause is deep within the hardware itself. It can be a bad battery, a power management IC malfunction, or any other unknown hardware error. Checking this is simple. Just boot the device to Recovery Mode or Odin Mode and see how it goes for at least 24 hours. Both of these modes run independently of Android, which means they don’t need to load Android at all. If the cause is due to an unknown Android-related glitch, the phone should stay in either Recovery or Download Mode and will not turn off on its own, unless the battery runs out of juice. On the contrary, if the problem is what we think it is, then the phone will reboot on its own regardless whether it’s in Recovery Mode, Download Mode, or Normal Mode. If the main reason is hardware malfunction, you should contact Samsung or any relevant party so the phone can be checked.

Some cases of boot failure can be fixed by reflashing the bootloader back to stock so before you send the phone in for repair, make sure that you try it. Below are the sample steps on how to reflash a bootloader. Exact steps may be slightly different so be sure to consult other guides on how to do it in your particular phone model.

  1. Look for the correct firmware for your phone model and download it. Make sure that you select the right one. It should be the same exact firmware that ran previously on your device. We assume that you list down the firmware version somewhere. If you did not take note of it before, there’s a chance that you may pick the wrong one. As you may know now, using an incorrect firmware can cause complications so good luck with that.
  2. Let’s now say that you have identified the correct firmware. You then want to download it to your computer. The firmware file should have a bunch of files in it like AP_, BL_, CSC_, etc.
  3. Look for the file that starts with a label BL; this should be the corresponding bootloader file for this firmware. Once you’ve identified the bootloader file, copy it to your computer’s desktop or to any other folder that you can easily access.
  4. Proceed with the rest of the flashing procedure using the Odin program.
  5. In Odin, click on the BL tab and make sure to use the bootloader file you’ve identified earlier.
  6. Now, make sure that the “Device Added” status and its “ID:COM box” has turned blue before hitting the START button. This will initiate the flashing of your phone’s bootloader.
  7. Restart the phone once the procedure is finished.

Problem 2: Galaxy Note 5 screen flickers and shows colors when booting up

Phone has worked great since the day I got it. Today it flickered and turned colors. I finally was able to turn it off. I turned it back on and it began flickering. I searched the internet for solutions and did everything. When it comes on it goes through the logos and phone names etc. When it gets to the screen to set it (which looks completely different from anything I’ve seen), it asks me to press start. I did. The flickering starts again. I select wifi. after that I get system crash messages. It ask me if I want to wait or stop settings. I select either ( I have tried it all). it may take me to a black screen with bars, Time and WiFi signal, it may continually loop until it gets stuck on the LTE. I can’t remember updating it recently. It’s NEVER near water, hasn’t been dropped. All the sudden it’s just done. Please help. — Jae Dreher

Solution: Hi Jae. The problem may be caused by a third party app so the first troubleshooting step that we want you to do is to restart the phone to safe mode. Safe mode blocks third party apps (those that are not from Google, Samsung, or your carrier) from running. If your phone will work just fine after you’ve restarted it to safe mode, that’s a confirmation of our suspicion.

To restart to safe mode, follow these steps:

  1. Turn off the phone completely.
  2. Press and hold the Power key.
  3. Once ‘Samsung Galaxy Note5’ shows, release the Power key and immediately press and hold the Volume Down button.
  4. The phone will restart but keep the Vol Down button pressed.
  5. Once the phone has finished restarting, ‘Safe mode’ will be display in the lower-left corner of the screen.
  6. You may now release the Volume Down button.
  7. Observe the phone and see it works normally.

If you think an app is causing a problem, you must do extra effort in identifying the cause. Remember, restarting to safe mode won’t tell you which app is problematic. You should uninstall apps individually and observe how the phone works after removing each one. This is the only way to determine where the problem comes from.

Problem 3: Galaxy Note 5 can’t boot to normal mode due to Factory Reset Protection

I purchased a new phone and gave my Note 5 to my granddaughter to use. It is no longer with a carrier and she used it with wifi only. Somehow she got a virus and had the blue screen which wouldn’t respond to any commands. I performed the factory reset and upon restart, l can’t go past the Google setup. I’ve put in the Google email address l created for her and put in the password but it just go back to put in the Google account info page. I did change her password on a PC because l didn’t remember it. Waited 72 hrs and still can’t get past the Google account setup. The phone is used just to keep her entertained, take pics, and play with free kids apps. I called Samsung and they need a proof of purchase documents. I purchased this phone with Verizon but now l am with a different carrier and Verizon doesn’t have the info. How can l get back into this phone? Ashley Paulson

Solution: Hi Ashley. The phone has been locked due to Factory Reset Protection (FRP) feature. FRP works by remembering the Google username and password added to the device before it was factory reset. If you’ve added more than one Google credentials, it would usually take the first one, so there’s a chance that the system is actually asking for your own Google username and password instead of that of your granddaughter’s. If you haven’t tried entering your Google account and password yet, make sure that you do.

Keep in mind that FRP may continue to lock the phone if it can’t authenticate the Google username and password with Google servers. This means that the phone must be connected to the internet before you enter the username and password. Be sure to set wifi up before adding the Google account details.

At this time, there’s no official way to unlock an FRP-locked device. Unless you can provide the correct Google account details, the phone will become unusable.

Android community is composed of both average and brilliant users and sometimes, workarounds abound for a particular issue. If you’ve already exhausted all official means to unlock the device, consider doing a Google search by looking for ways to bypass Factory Reset Protection.

Alternatively, you can try to flash the firmware via Odin Mode to re-install a stock firmware. Keep in mind that flashing is basically modifying core system files and thus, can lead to serious software problems if not done correctly. Be sure that you do extra research on how to do it properly in your device to avoid bricking the phone.

Problem 4: Galaxy Note 5 turns on briefly before turning off again

Hello. I have a Note 5, and have been able to rely on it for almost two years now. Today I was using it heavily for photos and social media while charging it with a power bank. The phone began to overheat but did not give the warning, only shut down. I removed the charging cord and left the power off for at least 30 minutes. Once cool I tried turning it on and it would only stay on for about 45 seconds at a time. I took it home and charged it fully with power off and then tried again with same result. I also held the power button plus volume down button for 10 seconds, same result. What can this mean ? It has not been dropped but did have one drop of club soda dripped onto the charging port end about 4 days ago, which was immediately absorbed onto a soft cloth. — Mickey4239

Solution: Hi Mickey4239. If you haven’t tried using a different USB cord and charger, make sure that you do so. The problem may only be with the charging cable and/or charger. If you’ve already tried this step, you’re out of luck. It means that the issue must be with the phone itself. And unless all the possible components can be tested, knowing where the problem lies is difficult. Since you did mention that the charging port was previously exposed to liquid, a technician must start his/her hardware troubleshooting there. Other possible reasons for this issue includes the battery, power management IC and the motherboard in general. Be sure to send the phone in to Samsung or to an independent service center near you.


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