my chrombook wouldn't power on any more on June 10,2016...

crosh> dmesg
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.10.18 (chrome-bot@build25-m2) (gcc version 4.9.x-google 20150123 (prerelease) (4.9.2_cos_gg_b6125c7_4.9.2-r115) ) #1 SMP Sat Apr 9 18:05:32 PDT 2016
[ 0.000000] CPU: ARMv7 Processor [413fc0f3] revision 3 (ARMv7), cr=30c7387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[ 0.000000] Machine: NVIDIA Tegra SoC (Flattened Device Tree), model: Google Nyan Blaze Rev 0+
[ 0.000000] Memory policy: ECC disabled, Data cache writealloc
[ 0.000000] On node 0 totalpages: 516074
[ 0.000000] free_area_init_node: node 0, pgdat c0e5d900, node_mem_map c0f04000
[ 0.000000] Normal zone: 1520 pages used for memmap
[ 0.000000] Normal zone: 0 pages reserved
[ 0.000000] Normal zone: 194560 pages, LIFO batch:31
[ 0.000000] HighMem zone: 2512 pages used for memmap
[ 0.000000] HighMem zone: 321514 pages, LIFO batch:31
[ 0.000000] PERCPU: Embedded 9 pages/cpu @c1f04000 s14208 r8192 d14464 u36864
[ 0.000000] pcpu-alloc: s14208 r8192 d14464 u36864 alloc=9*4096
[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 514554
[ 0.000000] Kernel command line: cros_secure console= loglevel=7 init=/sbin/init cros_secure oops=panic panic=-1 root=/dev/dm-0 rootwait ro dm_verity.error_behavior=3 dm_verity.max_bios=-1 dm_verity.dev_wait=1 dm="1 vroot none ro 1,0 2506752 verity payload=PARTUUID=52f6f589-2e4c-a942-9d1c-4eeba501b4c0/PARTNROFF=1 hashtree=PARTUUID=52f6f589-2e4c-a942-9d1c-4eeba501b4c0/PARTNROFF=1 hashstart=2506752 alg=sha1 root_hexdigest=c8e9874892189e35375a89d64352db38b52259fe salt=bee0f753f3686cfd243ebc85aa6ebd824da6b7a857c91901d7d8e96e53cc75fd" noinitrd vt.global_cursor_default=0 kern_guid=52f6f589-2e4c-a942-9d1c-4eeba501b4c0
[ 0.000000] device-mapper: init: will configure 1 devices
[ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Memory: 2015MB = 2015MB total
[ 0.000000] Memory: 2032336k/2032336k available, 31960k reserved, 1286056K highmem
[ 0.000000] Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xf0000000 - 0xff000000 ( 240 MB)
lowmem : 0xc0000000 - 0xef800000 ( 760 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.text : 0xc0008000 - 0xc0a59a3c (10567 kB)
.init : 0xc0c00000 - 0xc0c62780 ( 394 kB)
.data : 0xc0e00000 - 0xc0e66960 ( 411 kB)
.bss : 0xc0e66960 - 0xc0f04000 ( 630 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] Initial usec timer 1001358
[ 0.000000] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 4294967ms
[ 0.000000] Architected local timer running at 12.00MHz (virt).
[ 0.000000] Switching to timer-based delay loop
[ 0.000000] sched_clock: ARM arch timer >56 bits at 12000kHz, resolution 83ns
[ 0.000000] Console: colour dummy device 80x30
[ 0.710413] Calibrating delay loop (skipped), value calculated using timer frequency.. 24.00 BogoMIPS (lpj=120000)
[ 0.710420] pid_max: default: 32768 minimum: 301
[ 0.710475] Security Framework initialized
[ 0.710480] Yama: becoming mindful.
[ 0.710509] Mount-cache hash table entries: 512
[ 0.726422] Initializing cgroup subsys freezer
[ 0.726447] CPU: Testing write buffer coherency: ok
[ 0.726467] ftrace: allocating 21307 entries in 63 pages
[ 0.742332] /cpus/cpu@0 missing clock-frequency property
[ 0.742339] /cpus/cpu@1 missing clock-frequency property
[ 0.742344] /cpus/cpu@2 missing clock-frequency property
[ 0.742348] /cpus/cpu@3 missing clock-frequency property
[ 0.742358] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.742369] Setting up static identity map for 0xc076fc80 - 0xc076fd18
[ 0.742677] ftrace: Allocated trace_printk buffers
[ 0.743328] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.743762] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[ 0.744201] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[ 0.744247] Brought up 4 CPUs
[ 0.744256] SMP: Total of 4 processors activated (96.00 BogoMIPS).
[ 0.744259] CPU: All CPU(s) started in SVC mode.
[ 0.744582] devtmpfs: initialized
[ 0.747624] pinctrl core: initialized pinctrl subsystem
[ 0.747770] regulator-dummy: no parameters
[ 0.747906] NET: Registered protocol family 16
[ 0.748051] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.750625] console [pstore-1] enabled
[ 0.750630] ramoops: attached 0x100000@0x87f00000, ecc: 0/0
[ 0.751952] syscon 60006000.clock: regmap [mem 0x60006000-0x60006fff] registered
[ 0.752724] gpiochip_add: registered GPIOs 0 to 255 on device: tegra-gpio
[ 0.754898] syscon 7000e400.pmc: regmap [mem 0x7000e400-0x7000ebff] registered
[ 0.755146] tegra_fuse 7000f800.fuse: Tegra Revision: A01 SKU: 131 CPU Process: 1 Core Process: 1
[ 0.757163] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.757170] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.757205] Switched to clocksource arch_sys_counter
[ 0.762162] bio: create slab at 0
[ 0.762503] of_get_named_gpio_flags: can't parse gpios property
[ 0.762550] floating: no parameters
[ 0.762612] of_get_named_gpio_flags: can't parse gpios property
[ 0.762654] usb1_vbus: 5000 mV
[ 0.762707] of_get_named_gpio_flags: can't parse gpios property
[ 0.762750] usb3_vbus: 5000 mV
[ 0.762815] of_get_named_gpio_flags exited with status -517
[ 0.762826] platform 4.regulator: Driver reg-fixed-voltage requests probe deferral
[ 0.762863] of_get_named_gpio_flags exited with status -517
[ 0.762871] platform 5.regulator: Driver reg-fixed-voltage requests probe deferral
[ 0.762906] of_get_named_gpio_flags exited with status 122
[ 0.762953] vdd-lcd-bl: 5000 mV
[ 0.763021] of_get_named_gpio_flags exited with status 58
[ 0.763070] lcd-bl-en: 5000 mV
[ 0.763130] of_get_named_gpio_flags exited with status 86
[ 0.763175] vdd-hdmi-5v0: 5000 mV
[ 0.763241] of_get_named_gpio_flags exited with status 63
[ 0.763291] avdd-hdmi-pll: 3300 mV
[ 0.763352] of_get_named_gpio_flags exited with status 81
[ 0.763396] vdd-ts: 5000 mV
[