The laptop is connected to the wall plug, with the battery removed. I just leave the laptop on, go to sleep, and when I wake up, sometimes I'll find it already shut down (as opposed to the screen being turned off)

Sometimes 'whocrashed' will notice it, sometimes it will not.

A report from such a crash (not long after I had gone to sleep -- I must have left my computer sometime after 6 am):

On Fri 14-Aug-15 06:41:06 GMT your computer crashed crash dump file: C:\Windows\Minidump\081415-23571-01.dmp This was probably caused by the following module: nvlddmkm.sys (nvlddmkm+0x36E0B3) Bugcheck code: 0x1000007E (0xFFFFFFFFC0000005, 0xFFFFF88004C570B3, 0xFFFFF880033BDC98, 0xFFFFF880033BD4F0) Error: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M file path: C:\Windows\system32\drivers\nvlddmkm.sys product: NVIDIA Windows Kernel Mode Driver, Version 355.60 company: NVIDIA Corporation description: NVIDIA Windows Kernel Mode Driver, Version 355.60 Bug check description: This indicates that a system thread generated an exception which the error handler did not catch. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: nvlddmkm.sys (NVIDIA Windows Kernel Mode Driver, Version 355.60 , NVIDIA Corporation). Google query: NVIDIA Corporation SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M

Previously it was version 347.somethingsomething.

I do not think the issue is easily reproducible, so I doubt the service will even take it seriously. I feel they'll just unnecessarily reformat my system and hand it back to me.

  • Do you have an OpenGL screen saver turned on? – Sleafar Aug 15 '15 at 9:05
  • I don't know what that is, so it can't be something I did knowingly. But I have no screensaver, after 10 minutes the screen is darkened (not sleep mode though) – grdgfgr Aug 15 '15 at 9:06
  • When the computer is not used for some configured time, a screen saver can activate automatically. Some of them show 3D graphics. Something like this: youtu.be/IXEhK0c9k8I – Sleafar Aug 15 '15 at 9:11
  • Nope. Btw 'NVIDIA Corporation SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M' or 'nvidia nvlddmkm.sys' has a bunch of results but there is no actual solution. – grdgfgr Aug 15 '15 at 9:21

I'll bet you are in need of some better ventilation, a re-pasting/re-stickering of your heat sink in your laptop, or possibly a new processor fan. Run a stress test, and see if your laptop shuts down unexpectedly after an hour or two. If so, pursue the paste/sticker. At minimum, the fan could be dirty and in need of a dusting. But if it does not spin effortlessly, replace it.

  • laptop is new. right now it has been on for 20 hours and it is 58C – grdgfgr Aug 15 '15 at 22:04
  • 1
    Please leave out the signature and email address for posts. Just provide the answer material itself. – Jamal Aug 15 '15 at 22:14

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