[HELP] Stuck on Logo boot screen - adb device unauthorized - Android Q&A, Help & Troubleshooting

HTC One MIni2 - Unlocked - TWRP - Rom flashed
Restart the phone and I'm stuck on a black screen, with battery logo on the center, and the red wrigting "This build is for developement purpose only....".
In windows command line, I do "adb reboot recovery" (previously worked) but I have this error:
http://s14.postimg.org/dvvzx6ngh/Immagine.jpg
...and now i cant shotdown/reboot and nothing else...
Any solution?

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HTC m8 stuck on boot screen, detected by ADB but not following commands

I am on Wolla 5.0 and elementalx 6 something but I don't think these caused the stuck as the phone had been working fine.
Right before the phone was stuck, I updated an app called Lucky Patcher; I then restarted the phone and it's been stuck.
Under Devices manager, My HTC shows this device is working properly.
M8 was detected by Adb. But when I typed commands such as "fastboot reboot bootloader" or "fastboot reboot recovery" ADB shows and stuck at "waiting for device".
it has been like this for two hours.
Please help.
Try adb reboot bootloader it worked for me mate.

fastboot problem !!

i m getting problem in dell venue 8 3830. Fastboot commnads r not working, tab was having many problems with gapps n hangs many times.. but this time it suddenly switched of n then android is not opening, just stuck at dell logo, fastboot erasing system,data etc commands not working. n nothing is getting fomat in custom recovery wipe menu.. getting stuck in "formatting system". it was working before but suddenly such things started happening.. can help me ?
Device was rooted...
Same device Similar issue
Unrooted device. Never checked the USB Debugging option in the device.
I can get the device to boot in Droidboot mode (REBOOT - Droidboot, REBOOT, RECOVERY, POWER OFF). At the bottom of the screen:
FASTBOOT INIT...
FASTBOOT CMD WAITING
Still ADB Devices show nothing connected same as FASTBOOT Devices.
Note:
If I connect the Tablet powered down to the PC ADB Devices lists it properly
...\Android\sdk\platform-tools>adb devices
List of devices attached
DellVenue8000210953 device
On that situation it shows under Windows Device Manager - as USB device --> "Android-Phone".
I have both Google's and Intel's USB drivers installed. Still Device Manager will list a CLOVERVIEW device
When I select RECOVERY it would run in the "Open belly Droid logo with Red Exclamation mark - NO COMMAND.
From where ABD Devices lists
..\Android\sdk\platform-tools>adb devices
List of devices attached
DellVenue8000210953 Unauthorized
Can get into System Recovery (already tried wipe data/factory reset and wipe cache partition a few times)
In such mode still "adb devices" show Unauthorized.
Please, do you have any hints to circumvent that?
Any help is welcome!
Thanks in advance
Jorge

fastboot and bootloader wont work Trying to install TWRP

Trying to get TWRP onto my Sony Xperia S, LT26ii
Kernel version: 3.0.8+1.0.21100-30145-01956-g43358ca [email protected] host #1
Android Version 4.0.4
Bootloader unlocked, device rooted.
Typing "adb devices" shows my device as connected
Typing "fastboot devices" does nothing.
Typing "adb reboot bootloader" reboots device show a blue light on my phone charging light for 1 second then boots normally
Typing "fastboot flash recovery TWRP.img" displays "waiting for device"
So I turned phone off, disconected phone from USB and held power and volume up to test bootloader. I got a black screen and a single vibration followed by a gap of 1 sec and then 3 vibrations this repeated until I released the buttons.
I have no idea whats at fault but I would presume its android's bootloader or fastboot drivers or both any help would be appreiciated.

Stuck at Orange State Your phone has been unlocked and cant't be trusted Your...

Stuck at Orange State Your phone has been unlocked and can't be trusted Your device will boot in 5 second
So i first unlocked bootloader and the same message was shown but phone booted properly
I installed Twrp recovery (not official) and i booted in twrp then exited now my phone is stuck at booting
adb recognizes the device but fastboot can't recognize
Also i can't boot into Twrp
All buttons combinations bring up the same screen
Code:
C:\Users\Hrvoje>adb devices
List of devices attached
0123456789ABCDEF device
Code:
C:\Users\Hrvoje>fastboot devices
C:\Users\Hrvoje>
Also now adb says that my device is unauthorized
Code:
List of devices attached
0123456789ABCDEF unauthorized
My phone is Doogee Y6
PLZ help
I don't have money for a new phone

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