[Nexus 5 Q&A, Help & Troubleshooting] Archvilex:
Hi guys,

I woke up to find my Nexus off, still plugged in, which was strange. When i tried to turn it on, the Google Logo appeared, then the 4 Dots as per Marshmallow Boot animation...only they remained there 35 mins after I attempted to put on the phone.

I figured something was up with the boot, so I left it for a while after restarting, but and it was still stuck.

Since then I've tried reloading Stock Roms, (From KitKat to Marshmallow), installing custom recovery and trying anything I could find online to try to get this to work, but sadly I haven't been able to.

If i try to Reset, I get failed messages on some partitions.

I'll attach some logs showing the messages from some of these attempts.

Can anyone assist or help diagnose?

Attempt at Flashing KitKat with Nexus Root Toolkit

Flash Stock + Unroot [WugFresh Development]

------------------------------------------------------------------

target reported max download size of 1073741824 bytes

sending 'bootloader' (2508 KB)...

OKAY [ 0.285s]

writing 'bootloader'...

FAILED (remote: flash write failure)

finished. total time: 0.487s

rebooting into bootloader...

OKAY [ 0.129s]

finished. total time: 0.130s

target reported max download size of 1073741824 bytes

sending 'radio' (45409 KB)...

OKAY [ 1.627s]

writing 'radio'...

FAILED (remote: flash write failure)

finished. total time: 2.854s

rebooting into bootloader...

OKAY [ 0.119s]

finished. total time: 0.120s

target reported max download size of 1073741824 bytes

sending 'boot' (8700 KB)...

OKAY [ 0.494s]

writing 'boot'...

OKAY [ 0.733s]

finished. total time: 1.230s

target reported max download size of 1073741824 bytes

erasing 'cache'...

OKAY [ 0.211s]

sending 'cache' (13348 KB)...

OKAY [ 0.629s]

writing 'cache'...

FAILED (remote: flash write failure)

finished. total time: 1.023s

target reported max download size of 1073741824 bytes

sending 'recovery' (9284 KB)...

OKAY [ 0.504s]

writing 'recovery'...

FAILED (remote: flash write failure)

finished. total time: 0.687s

target reported max download size of 1073741824 bytes

erasing 'system'...

FAILED (remote: failed to erase partition)

finished. total time: 0.115s

Creating filesystem with parameters:

Size: 13725835264

Block size: 4096

Blocks per group: 32768

Inodes per group: 8144

Inode size: 256

Journal blocks: 32768

Label:

Blocks: 3351034

Block groups: 103

Reserved block group size: 823

Created filesystem with 11/838832 inodes and 93654/3351034 blocks

target reported max download size of 1073741824 bytes

erasing 'userdata'...

FAILED (remote: failed to erase partition)

finished. total time: 0.186s

Creating filesystem with parameters:

Size: 734003200

Block size: 4096

Blocks per group: 32768

Inodes per group: 7472

Inode size: 256

Journal blocks: 2800

Label:

Blocks: 179200

Block groups: 6

Reserved block group size: 47

Created filesystem with 11/44832 inodes and 5813/179200 blocks

target reported max download size of 1073741824 bytes

erasing 'cache'...

FAILED (remote: failed to erase partition)

finished. total time: 0.214s

rebooting...

finished. total time: 0.003s

If you require more information, ask and I will provide where I can.