Default Boot Device Missing or Boot failed - Android Q&A, Help & Troubleshooting

Basically what the title says when i try doing that thing my tablet doesn't even have a left or right and its telling me to move to the "Boot Manager" and its right next to the continue, and it doesn't have a right only up, down, and the power button im getting kinda scared if i screwed up my tablet.. If i can get some help i would be most appreciate it.
Also the Boot manager has a camera looking thing with a pointer on it.
Ill list the things that it has for the thing
Continue, Boot From File (Only 2 that i can go on because up, down, enter(power button))
--[Boot Manager, Device Management, Secure Boot Option and SCU
(Thoose i cant goto (hopefully)) ]--

Related

Android boot loop

i got juicydefender addon from a friends sd card...i install addon...but when i lauch it , it says this is addon u need app..so i dload app from market...after install..reboot loop continues...from lg screen at startup...plz help...i juss got this phone...and it's useless now
Boot into safe mode by doing this: with the phone off, hold down the Menu button and press the Power button to start the phone, but keep the Menu button held down completely until the phone has booted up all the way (you'll see "Safe Mode" in the bottom left-hand corner after it's rebooted). Then open Settings->Applications->Manage Applications->Running, select those apps and uninstall them. Then reboot and you're good to go.
luckily you have just bought your phone and it is fresh!
follow this and you will be all fine, dont worry:
http://forum.xda-developers.com/showthread.php?p=13396506#post13396506
GOOD LUCK AND CANT WAIT TO HEAR YOUR GOOD NEWS!

[Q] Device "soft bricked" - Help needed!

Hi guys, I was trying to flash a custom ROM for the first time onto my ASUS ME301T, as I was fairly sure ASUS was not going to update these devices anymore.
Anyway, now the device will not start. It will power on, and the first of the two ASUS start-up screens will appear (the non animated/static one). In the top corner, it reads "The Device is Unlocked" as was required when attempting to flash the 4.4.4 ROM. Beyond this, nothing happens. If I attempt to power down the device it simply reboots itself shortly after. The only way to turn it off is to insert a paperclip into the physical reset hole, or to let the device run out of battery.
Now before you tell me to go into recovery by holding power and volume down... I've tried that hundreds of times.. As well as power+vol up, although I don't know what that does. I cannot access recovery mode, as far as I know anyway. Further, the device is not detected by either of my computers (desktop or laptop, windows and mac) so I can't attempt to flash it through USB (unless there is a way to do this?).
The device does not heat up, the screen simply stays on the ASUS static logo. It doesn't power off unless I hold the button, and it quickly restarts. To provide context as to what I did to cause this issue.. It was working fine on its factory ROM, no issues, and I attempted to do another system reset to fix an issue I was having with TWRP. However, I accidentally selected the middle open, not RCK, not reset, but something like "boot into Linux" or something, I can't exactly remember. Anyway, like an idiot I freaked and powered off the device.. My guess is that this is was caused the issue?
Anyway, making this post here as this is my first time looking into/attempting to flash a device. Would appreciate some expert help before I use my tablet to prop up the books on my bookcase
Help me try to unbrick my tablet! (I'm not too hopeful though..)
Cheers

Help—upgradibg system fail, stuck on recovery mode

So my tablet's model is Bluewave 8 HD + (Rockchip 33GT or something like that) and I decided to update my system through wireless update. So I downloaded it, and clicked update now. By that time I had 35% of battery left.
However, it says that it was an error. I think there were "Installation aborted" and "Error 7" and that stuff. It was on fastboot/recovery mode.
Now, I obviously couldn't select other options apart from reboot system now since my tablet doesn't have volume buttons. The buttons are on the screen. So my option is to reboot and go to the same process again— system update (Android is loading something like an object or stuff), error, and reboot.
I watched a video where clicking the reset button with the power button will move the selection down, so that it won't be reboot system now but it doesn't work for me. Whenever I do that (and as well as holding power and reset button {it is the little hole on the back where I need to poke it inside with a bent paperclip}, it just turns the screen off like a hard reset.
I can't also connect to a computer. Although my computer detects it as an "Android Phone and the Android Boot blah blah", software's doesn't detect the device.
I can't remove battery either because the back is inseparable.
Any fix? I really need to get it running well ASAP.
Thanks!
Ps: My tablet is Rooted.
halseynth said:
So my tablet's model is Bluewave 8 HD + (Rockchip 33GT or something like that) and I decided to update my system through wireless update. So I downloaded it, and clicked update now. By that time I had 35% of battery left.
However, it says that it was an error. I think there were "Installation aborted" and "Error 7" and that stuff. It was on fastboot/recovery mode.
Now, I obviously couldn't select other options apart from reboot system now since my tablet doesn't have volume buttons. The buttons are on the screen. So my option is to reboot and go to the same process againâ?? system update (Android is loading something like an object or stuff), error, and reboot.
I watched a video where clicking the reset button with the power button will move the selection down, so that it won't be reboot system now but it doesn't work for me. Whenever I do that (and as well as holding power and reset button {it is the little hole on the back where I need to poke it inside with a bent paperclip}, it just turns the screen off like a hard reset.
I can't also connect to a computer. Although my computer detects it as an "Android Phone and the Android Boot blah blah", software's doesn't detect the device.
I can't remove battery either because the back is inseparable.
Any fix? I really need to get it running well ASAP.
Thanks!
Ps: My tablet is Rooted.
Click to expand...
Click to collapse
Hey how did you enter recovery mode can you please tell me and are there custom recoveries available?
PS: you can scroll through the recovery mode by pressing the little button in the tiniest hole in your tablet so use a paper clip or something.

Weird problem with an LG phone

Hello y'all.
Alright, I am totally, completely uneducated on these matters. I had what seemed like a hardbricked phone (LG Optimus F3Q D520), maybe it was just a battery problem. Anyway, I looked up my problem on the internet, was out of options, saw that something called Fastboot could maybe unbrick my phone.
So I give this a shot, I download something called "platform tools". I don't even know what's in there, a bunch of files. I see Fastboot.exe, click on it expecting some sort of software to pop up. Instead, a window appears with coding in it and disappears like a second later. I don't do anything else than clicking on this. Note, my phone is seemingly dead but it's connected to my pc at that moment.
Now I decide that I'm in way over my head, I forget all about this. A day later, I plug my phone in a charger to see if maybe it would charge up, and the LG logo pops up. So I thought this would be it, but I then get this message : "Secure boot error! Cause: boot certification verify" and it doesn't go further.
After looking this specific error up on google, all I see is stuff like "rooting", "bootloading" etc. At that point, I started to suspect that perhaps I had modified my phone with this little Fastboot.exe venture of mine.
What do you guys think? Any hope whatsoever?
Thank you so much for reading through all this, I appreciate it !
Hi. Fastboot did not do anything to your phone. You can't double click on Fastboot.exe. You need to execute it by command line. Where the fastboot.exe file is located (the folder), hold shift and right click and hit "open command window here." type in fastboot devices and see if your device is listed. What you were seeing before when you double clicked fastboot.exe was the command window opening up, listing the contents of the file, and closing. Anyways, some LG phones take time to get power. You connecting it to a charger over night charged the phone's battery (battery was probably dead before). Getting the secure boot message means that your boot partition is messed up. You can try opening your phone in recovery mode by holding power button and volume down button upon boot-up, letting go of the power button when you see the LG logo for a quick second and holding it again. It will ask to reset your phone twice. Hit yes both times and see if it worked. But if your boot partition is messed up, there is nothing you can really do.
There is a thread over here how to unbrick all LG models. You can check it out as well and see if it helps. https://forum.xda-developers.com/android/general/unbrick-lg-model-download-recovery-t3060184
Thank you very much for all the help, man, it's very helpful ! =)

Please help!!! Dev mode input/output error

Hello,
I am trying to get to developer mode on my HP 14 G3 and it gets stuck on the "preparing system for dev mode" screen. The progress wheel continues to spin but over an hour on the last attempt made no progress.
In recovery mode, ctrl+D, it goes to transitioning screen, then preparing system screen. Progress wheel freezes momentarily with "starting in 30" displayed top left (does not count down) and then "/sbin/clobber-state: 1: pv: Input/output error" is displayed and the progress wheel starts spinning.
Have made 3 attempts so far. No trouble booting back up normally, powerwash after 1st attempt. Anyone know what's going on?
Thank you in advance.
I have the same
I have the same error
What do you do with it ?
I have the same problem I can cancel the process by reverse proccess. I would really like to put liquid sky on my chromebook
Who knows.
Try going to settings then find about device, press build number 7 times. Done. ~P
Somebody found a workaround . scroll down to comments or search for 2clobber"
I might have a solution, but you’ll need to make a recovery USB first. When it stops working press escape, refresh, and the power button to bring you back to the Chrome OS has stopped working screen. Put in the USB and the chromebook will boot up normally, but OS verification will still be off since you never turned it on
Click to expand...
Click to collapse
sorry for digging up
NoDiskNoFun

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