MS Lumia 830 - stuck on boot logo and can´t charge phone - Microsoft Lumia 950/950 XL

Hello,
My old good Lumia 830 with Windows Phone 10 stuck on charging and can´t boot. I try hard reset, but it can´t help. Please how to save this phone? I like it

Related

[Q] don't boot os :S

Hi guys!
I’ve got a problem with my optimus 7.
Yesterday i bought this device. In the shop we couldn’t power on, because the battery was discharged.
The seller told me, that „this device is ok. He tried it earlier one month, it wasn't work.
I brought home, i connect the device to the charger.
2 second later a battery status was on the screen.
About five minutes later the screen changed to lg logo. And than happened nothing.
The device don’t want to boot the windows phone os.
A tried it power on a few times, but nothing happened.
I connected the device to my pc, but the device don’t load the os.
Please help me, what can i do now ?
P.S.: Sorry for my bad english.
I had this kind of problem last summer : the flash of the LG is corrupted. You can try to flash a new ROM, but the best is to bring back the phone to the shop.
mine has same issue, whatever rom i'm flashing to, after reset , phone still stuck at LG logo

Can't boot (Samsung logo)

Hi, my girlfriend has an Samsung Omnia 7.
But randomly when she tried to turn it on, it stucks on Samsung logo and cant boot.
I wanted to try hardreset, but she dont want to lose all data.So...
Is there a way tu backup data or is the service the only way?
Thanks a lot.

Can't boot (I even tried to recover)

I have an Omnia 7 that was T-Mobile (germany) branded, I debranded it via flashing other roms, and i flashed many time until some days ago after a flash it stopped to boot; now when I power on it stucks at logo.
So I looked over the net for a solution and I tried with the Device Update Support Tool and with the WP7 Downloader but both of them hadn't worked.
The strange thing is that I can't even hardreset because when I press Camera+Power+vol down I see for (less than) a second the screen where is asked to press the Win button and than it reboot.
Can somone please help me to recover that phone?
Thanks in advance

lumia 520 stuck on red screen with nokia logo after trying to rollback to wp8.1

Yesterday I tried to upgrade to windows phone 10 technical preview, but it got stuck on cog wheel page screen with no progress for 2 hours.
I searched a bit on net and found that removing the sd card helped, so I removed the battery between update and removed the battery and then sd card, and rebooted the device. This time it progressed but after some time it stuck in a boot loop, where it would repeatedly restart to cog wheel screen.
I tried all the reset options on the net, but it didn't work. Finally I decided to roll back to windows phone 8.1, using windows phone recovery tool. It successfully started, downloaded required file, started installation and then showed an error and after that it is stuck on a red screen with large NOKIA logo on it.
I have tried everything given here
goo.gl/UVSjQi (xda thread)
goo.gl/A8ltgT (step by step process on how to recover bricked windows phone) and a lot more places.
I think the problem is they want the device to be connected as "QHSUSB_DLOAD" but my lumia 520 is detected as "NOKIA FLASH" in windows 10, and it gives error while trying to write data to phone.
I'm trying the same process in windows 8.1 virtual machine, as I post the question here.
F.A.Q.
1. The phone in question is lumia 520
2. On pressing volume down and power key, it reboots to red screen.
3. No I didn't hard reset the phone before starting to upgrade to windows 10 technical preview.

Lumia 520 bricked after reset

I tried to install the Windows 10 preview on my lumia 520 but after the spinning gears it always gave back an error code when it rebooted into windows 8.1. I decided to try and reset to fix the problem. It failed after 5 minutes and gave back a sad face and does this each time I reboot. I have tried many of the fixes on the site but I cant get the phone into any other mode other than the spinning gears and sad face. It connects to the computer for a few seconds that says Nokia Bootmgr in device manager but then just disconnects. Pressing the volume down doesnt work. Any suggestions?
Windows Device Recovery Tool?
Ive tried this but the problem is the computer doesnt recognize the phone at all

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