Samsung Chronos 7 laptop (Intel core i7) running Windows 8.1
- laptop won't wake from sleep/hibernate
- with hibernate the display does not shut off, screen black, unable to wake
- with sleep (and hibernate off) the laptop will shut down on its own
- Event Viewer logs:
Windows failed to resume from hibernate with error status 0xC000007B
powercfg -h offand
powercfg.exe /hibernate off
- removed hibernate, leaving sleep. Laptop shuts off while in sleep mode.
- power options/sleep settings ignored
- disable Intel HD Graphics 4000; no noticeable effect
- update drivers; no noticeable effect
Event Viewer -
The computer has rebooted from a bugcheck. The bugcheck was: 0x0000009f (0x0000000000000003, 0xffffe000b9f6f9c0, 0xffffd0014dcfacb0, 0xffffe000c1f23e10). A dump was saved in: C:\WINDOWS\MEMORY.DMP. Report Id: 012416-75671-01.
Who Crashed -
On Sun 1/24/2016 2:41:33 PM GMT your computer crashed crash dump file:
C:\WINDOWS\Minidump\012416-75671-01.dmp This was probably caused by the following module: ntoskrnl.exe (nt+0x14E2A0)
Bugcheck code: 0x9F (0x3, 0xFFFFE000B9F6F9C0, 0xFFFFD0014DCFACB0, 0xFFFFE000C1F23E10)
Error: DRIVER_POWER_STATE_FAILURE file path: C:\WINDOWS\system32\ntoskrnl.exe product: Microsoft® Windows®
Operating System company: Microsoft Corporation
description: NT Kernel & System
Bug check description: This bug check indicates that the driver is in an inconsistent or invalid power state. This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. The crash took place in the Windows kernel. Possibly this problem is caused by another driver that cannot be identified at this time.
Edit/Update In attempting to fix this issue, my laptop went into and endless boot cycle and I had to do perform a repair installation. This essentially 'reset' my laptop, without a full reformat. What I discovered is that the Samsung settings software may be the culprit. As I took several days to update my machine back to it's prior state, the hibernation was working properly. However, when I installed the Samsung settings app (I will update with the actual name), hibernation was removed as an option in power settings. With these laptops, you need the Samsung software to use some of the specific keyboard features. Now, my machine will sometimes go to sleep, but occasionally something interferes with auto sleep settings.