Can an Unrooted phone be rooted again?

Hi Friends,
Is it as easy as it sounds? Thanks in advance! :)

An unrooted device won't let me connect to me google account/.

Hey guys, I rooted my galaxy 10.1,(Model Number:Gt-N8013, Kernel Version:3.0.31-813049) but after the rooting process, ( I used KingoRoot) I immediately went and unrooted my tablet, and everything went well, it said i successfully unrooted it, but after I restarted my device, I tried to access my google playstore, but it told me to log into my google account, confused, I put in my log in information, but it said, "Couldn't sign in, can't established a reliable connection to the server", after repeatedly trying to sign in, I changed my internet, After reading some forums, it said NOT to do a factory reset, but i'm a noob. I don't know anything about "flashing the kernel", or like "flashing the rom", so being the ignorant fool like myself, I reset factory reset it, but after i did the deed, of course prepared, I lost everything (which really didnt bother me), I still couldn't sign into my google account, I emailed the KingoRoot software team and they said they thing was unrooted correctly. HELP!!!! Thanks, I will try everything.

TL;DR An unrooted device wont let me log into my google account.

Please help noob user: Unrooted kindle fire hd 7 bootloop with broken power button

I have been having problems opening my device for months now because the power button isn't working anymore for me. So when I open my Kindle I just usually plug the charger. Then one day, I don't know what happened, when I opened my device it was so slow and the launcher (original) is always not responding. So when I finally manage to go to Settings > Device > Restore Factory settings... my account was deregistered and I waited for it to reboot. When it did, it was the same. I didn't think that the Reset settings I did, worked. My power button is broken, right? So what I did next, I opened the back case of the device and tried to push the power button with a pin, then all of a sudden it restarted and ended up being stuck with the Kindle Fire logo. Anyone could help me with this problem? I'm still hoping that it could still be fixed. Please reply, any help would be much appreciated. (My KFHD is the first gen btw)

and I couldn't reboot again the device, it's still stuck with the logo

HTC One M7 Unrooted stuck in bootloop, Nothing Works

Hey everyone, so today I tried turning on my mobile data on my HTC One M7 but it was not turning on so I decided to reboot the phone because that usually works but then when the phone restarted it could not get past the HTC ONE logo.

Now, my phone is not rooted and I do not have any custom rom, I only update my Lollipop with updates from HTC.

I have tried everything. I have tried the Shine a bright light trick, I have booted into recovery and done a factory reset and wiped the cache, I have done every possible action in the bootloader menu nothing is working.

PS - Unlike most cases I have come across, my phone is not rebooting it is just stuck at the LOGO. Someone please help or direct me to somewhere I can get help.

Thanks in Advance

Stuck on bootloop - unrooted, S-ON, Unlocked, Tampered

Hi all... My device just went on bootloop. Last evening battery was drowned so I reached home and plugged it to charger and its on bootloop since then.. now fastboot screen is coming automatically on power on.

Screen is showing this:


Don't know what to do as this device is not rooted or unlocked.

GS4 5.0.1 unrooted and stuck

Hello everyone, i need some help recovering my verizon gs4 i545 here's the quick background.
bought it refurbed with lollipop 5.0.1 already installed. After a few jabs with kingroot i got it rooted.
All is good until i decided to unroot and install an update (don't ask why!), phone restarted after the update and is now stuck on the verizon splash screen.
I am able to get into download mode which i'm 100% is doing absolutely nothing.
I installed odin 3.09 but odin is not seeing my phone it IS seeing COM:6 port? first USB cable wouldn't show anything at all, 2nd USB cable showed the COM:6 but again Odin is not recognizing or seeing the phone. Phone is 88% charged.
My question is where am i at this point and is there hope for recovery?

Thanks in advance,

[HELP] Unrooted Nexus 5 randomly shut off, now frozen on Google logo at startup

I didn't drop it or get it wet or anything, it was just sitting on my desk and it randomly shut off. I've tried shutting it off and on again but it just comes back to the google screen where it sits frozen for about 30ish+ minutes before it shuts off, I can't turn it off otherwise, if I try turning it off it just turns itself back on so I can't shut it off. Is there anything I can do to save my data (or even better, fix my phone) or am I screwed? I also don't have USB Debugging turned on so I can't get stuff back that way either. My phone is not rooted and running stock android 5.1.? (Don't remember my exact version but I think I've missed the last 2 minor updates)