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I was using my laptop then took a break for lunch.
Came back and it had restarted.
I checked Windows Updates and it said there was one installed successfully on 02/13.
Why did my computer suddenly restart?
I looked in Event Log (System):
The previous system shutdown at 12:19:13 PM on 2/17/2018 was unexpected.
Next I find this:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly. (Source is Kernel-Power)
It's a laptop so has battery backup, so probably not a loss of power.
Here's another weird one (not sure what bugcheck is):
The computer has rebooted from a bugcheck. The bugcheck was: 0x0000009f (0x0000000000000003, 0xffffd4095cacd830, 0xffffee8039c5ac40, 0xffffd40965c8ebd0). A dump was saved in: C:\WINDOWS\MEMORY.DMP. Report Id: 8d730435-e93f-4b3c-8ffa-bfafe4115fec.
Right before the restart I see:
The local adapter does not support an important Low Energy controller state to support peripheral mode. The minimum required supported state mask is 0x491f7fffff, got 0x1fffffff. Low Energy peripheral role functionality will not be available.
Maybe it went low power, then the device didn't support it so the system crashed? I don't know.
I did find one in the Event Log (Application) that occurred right before the reboot time:
Application Event Log:
SettingSyncHost (11192,G,0) The beta feature EseDiskFlushConsistency is enabled in ESENT due to the beta site mode settings 0x800000.
Apparently that is a BETA Win 10 1709 feature.
I'm wondering if this was the same restart problem @chris-maunder (and others) experienced the other day (Windows Update,No Thanks - Lounge[^]). Was their's an actual update or this same problem / crash? If I had ignored this I would've just thought it was a Rogue Update.
If you had gone one more entry in the log, you'd see this:
"Windows 10 was detected. The system is inherently unstable."
".45 ACP - because shooting twice is just silly" - JSOP, 2010 ----- You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010 ----- When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
Strangely enough, I have been running Windows 10 for a year here at work and on three different machines at home, and haven't experienced a single crash on any of those.
About half of the 300 PCs we have at work run W10 (the rest runs W7), and I haven't heard about any instability problems with any of those, in spite of lots of special hardware drivers, updated all the time, and a large number of tools deeply intertwingled with the OS, such as a multitude of debuggers and hardware monitors.
But then: These systems are maintained by people who know how to handle Windows systems. They do not try to force the systems to be as Linux lookalikes as possible - that is bound to cause trouble. Just like if you try to manage a Linux box as if it were a Windows machins: Then it turns out that Linux is not quite as stable as rumours seem to suggest...
One morning a few weeks ago, a few dozen of our machines at work had restarted at the same time in the middle of the night, while the majority of the machines were unaffected. The restart affected both W10 and W7 machines. We never found a good explanation, and concluded that since it is winter time, with lots of snow breaking down trees that fall over the power lines, the power grid sometimes can't perfectly suppress the spikes caused when switching over to another distribution line, and we experience a small spike in the power outlets. Some PC power supplies handle this well, others are knocked out and cause a restart when stable power is again available.
We didn't investigate this further; most of our machines "survived". A couple of nightly builds had to be rerun, but going deeper into it would not be cost effective.
I gotta fix the wife's all-in-one when I get home today...keeps crashing due to a problem with the wireless adapter failing on wake from standby...nice blue screen with a sad face...kinda reminds me of the old mac sad face that I used to see so much of. (OS 7.5.x)
If it helps - I recently purchased a non-major brand laptop for development. It ran perfectly until the 1709 update. I did not connect the update with the instability issues that started to occur. Really weird $hit - the touchpad driver causing BSODs, etc.
Researching, I think what happened is that Windows decided I needed the latest and freshest drivers for my devices. It appears that this is the continuous stupidity of Microsoft in the OS bullhits.
I downloaded the OEM supplied driver packs, updated with their older (but stable) version and have not had a blue screen in two weeks (I was getting 2-4 a week).
<italic>Stuck in a dysfunctional matrix from which I must escape...
"Where liberty dwells, there is my country." B. Franklin, 1783
“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759
I *highly* doubt that EseDiskFlushConsistency brought the system down... all this function does is flush database modifications to disk.
If you are interested in finding out what brought the system down then download WinDbg and open the minidump. If you setup the symbols... you will get the exact exception and entire callstack... Bugcheck 0x9F is a DRIVER_POWER_STATE_FAILURE meaning that one of the device drivers installed on your laptop improperly handled a power state.
Instructions for debugging a device driver power management error is here:
You will find exactly which driver caused the bug check. Always remember that Microsoft Windows allows third-party vendors to write device drivers. Don't be surprised if this is a third-party device driver.
Btw, once you learn how to use WinDbg you will probably not ask many questions[^]... because it's faster to just fire up WinDbg and get the answer.
I've done some more thinking about this. It was most likely a stray cosmic ray... probably a muon that struck one of your sticks of RAM in the state capacitor and flipped a bit. This probably caused notepad (even though it wasn't running) to determine that it needed to flush it's contents to disk. After calling EseDiskFlushConsistency... your hard drives all spun up at the same time... and all of the zero point energy was consumed in your power supply and this resulted in a bugcheck 0x9F - DRIVER_POWER_STATE_FAILURE. This massive consumption of energy opened a miniature black hole and it consumed your minidump... that's why you can't find it.
Trust me, that's exactly how it happened. Happens all the time.
My machine has not restarted and I didn't delete the memory.dmp file but now it is gone.
Why would Win10 do that?
Easy... professional criminals always do it... erase traces, so noone can connect you to the crime :P
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
I expect the system to do the right thing all the time
Yeah, I understand. People have different expectations... 'The right thing' is relative and while you maybe wanted to keep your minidumps... others may want them cleaned up daily so they don't take up any disk space.
I would be very worried that the last thing it did/attempted/was doing was any sort of disk flush,
and as OP mentioned above looked for the memory.dmp file that disappeared itself without message/log/warning
Boy, that win10 really inspires confidence, not!
And yet they still tell people to upgrade to 10 because it's safer than the old [solid] w7 Have one client using a stock PC running w7 as an app/db server, only been down once in 5 years (2 years ago now) for a scheduled power outage.
w10: no thanks; stick with what actually proven works.
Signature ready for installation. Please Reboot now.
A reboot just bit me too. I had a dozen+ tabs open in two browsers researching something, 2 instances of VS. I was in the other room eating dinner when I hear the BIOS beep from my computer.
Thanks a lot Windows Update KB4074588. That was absolutely not planned or communicated.
The process c:\windows\system32\svchost.exe (MYNAMEHERE) has initiated the restart of computer MYNAMEHERE on behalf of user NT AUTHORITY\SYSTEM for the following reason: Operating System: Service pack (Planned)
Reason Code: 0x80020010
Shutdown Type: restart
4.2 Magnitude apparently, about 20km NNE from Swansea. A quick check on Google maps, and it was about 5 km from us.
The devastation is horrendous.
(The cat was spooked, and nothing even fell off a shelf.)
Send aid money for rebuilding now! Send it to me, and I'll coordinate it...
Still, explains the series of noises a few days ago: about 4am I was woken by a noise like a Parkinson's patient with a tea cup and saucer. Lasted maybe 30 seconds, then stopped. few minutes later, it's back. Could I find what it was? Nope. Now I know - probably a very small series of foreshocks.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!