- Nov 25, 2016
- 3
- 0
- 1,510
For a month I've been experiencing random restarts when gaming, no error messages or BSODs, the only indicator in Event Viewer is an Event 41, Kernel-Power critical event:
Build is 2 years old with no previous issues:
Windows 7 SP1 (previously Windows 10)
MSI Z87I GAMING AC Mini-ITX
i5-4670k @ 3.4Ghz
8GB Corsair Vengeance DDR3 @ 1600Mhz
MSI GTX970 Gaming Twin-Frozr 4GB
SeaSonic 550W G-Series Gold PSU
Similar threads
http://www.tomshardware.co.uk/forum/46250-63-random-restarts-critical-kernel-power-event-task
http://www.tomshardware.co.uk/answers/id-2322560/kernel-power-event-task-category-random-restarts.html
Problem began occurring just after a large Win10 update a month ago so first port of call was reinstalling drivers & then reinstalling the OS. Steps taken so far:
- updated drivers
- cleaned case, fans, reseated heatsink
- formatted & reinstalled Win10
- flashed BIOS to latest version
The restarts persisted, so I went ahead & formatted & reinstalled Windows 7. More steps:
- updated drivers, disabled additional sound drivers, changed DRAM frequency in BIOS, enabled XMP, disabled CPU turbo boost
- ran memtest86 with no errors
Next I tried uninstalling the GPU and running on Intel integrated graphics. The system seemed stable & over a 3-4 hour test I had no restarts.
So I reseated the GPU, reinstalled drivers & ran some stress tests. Prime95 ran stable, CPU temps maxxed out at ~73C
Then FurMark to stress the GPU. It ran okay and GPU temps never passed 65C, however as soon as I started up another task, Firefox or Media Player, it would instantly trigger a restart.
I rolled back to older GeForce drivers and the same thing happened. FurMark triggers a restart even without task switching/running additional programs.
What's my next step? Am I right in assuming it's either a power supply issue to the GPU, either from the PSU or mobo, or simply a GPU fault? Temperatures are fine so it doesn't seem like an overheating issue, PSU is highly-rated and should provide more than enough power...
Any further troubleshooting advice would be really appreciated. Can I narrow it down without a spare GPU/PSU/mobo for testing?
- System
- Provider
[ Name] Microsoft-Windows-Kernel-Power
[ Guid] {331C3B3A-2005-44C2-AC5E-77220C37D6B4}
EventID 41
Version 2
Level 1
Task 63
Opcode 0
Keywords 0x8000000000000002
- TimeCreated
[ SystemTime] 2016-11-26T04:10:17.794802300Z
EventRecordID 12599
Correlation
- Execution
[ ProcessID] 4
[ ThreadID] 8
Channel System
Computer Fawkes
- Security
[ UserID] S-1-5-18
- EventData
BugcheckCode 0
BugcheckParameter1 0x0
BugcheckParameter2 0x0
BugcheckParameter3 0x0
BugcheckParameter4 0x0
SleepInProgress false
PowerButtonTimestamp 0
- Provider
[ Name] Microsoft-Windows-Kernel-Power
[ Guid] {331C3B3A-2005-44C2-AC5E-77220C37D6B4}
EventID 41
Version 2
Level 1
Task 63
Opcode 0
Keywords 0x8000000000000002
- TimeCreated
[ SystemTime] 2016-11-26T04:10:17.794802300Z
EventRecordID 12599
Correlation
- Execution
[ ProcessID] 4
[ ThreadID] 8
Channel System
Computer Fawkes
- Security
[ UserID] S-1-5-18
- EventData
BugcheckCode 0
BugcheckParameter1 0x0
BugcheckParameter2 0x0
BugcheckParameter3 0x0
BugcheckParameter4 0x0
SleepInProgress false
PowerButtonTimestamp 0
Build is 2 years old with no previous issues:
Windows 7 SP1 (previously Windows 10)
MSI Z87I GAMING AC Mini-ITX
i5-4670k @ 3.4Ghz
8GB Corsair Vengeance DDR3 @ 1600Mhz
MSI GTX970 Gaming Twin-Frozr 4GB
SeaSonic 550W G-Series Gold PSU
Similar threads
http://www.tomshardware.co.uk/forum/46250-63-random-restarts-critical-kernel-power-event-task
http://www.tomshardware.co.uk/answers/id-2322560/kernel-power-event-task-category-random-restarts.html
Problem began occurring just after a large Win10 update a month ago so first port of call was reinstalling drivers & then reinstalling the OS. Steps taken so far:
- updated drivers
- cleaned case, fans, reseated heatsink
- formatted & reinstalled Win10
- flashed BIOS to latest version
The restarts persisted, so I went ahead & formatted & reinstalled Windows 7. More steps:
- updated drivers, disabled additional sound drivers, changed DRAM frequency in BIOS, enabled XMP, disabled CPU turbo boost
- ran memtest86 with no errors
Next I tried uninstalling the GPU and running on Intel integrated graphics. The system seemed stable & over a 3-4 hour test I had no restarts.
So I reseated the GPU, reinstalled drivers & ran some stress tests. Prime95 ran stable, CPU temps maxxed out at ~73C
Then FurMark to stress the GPU. It ran okay and GPU temps never passed 65C, however as soon as I started up another task, Firefox or Media Player, it would instantly trigger a restart.
I rolled back to older GeForce drivers and the same thing happened. FurMark triggers a restart even without task switching/running additional programs.
What's my next step? Am I right in assuming it's either a power supply issue to the GPU, either from the PSU or mobo, or simply a GPU fault? Temperatures are fine so it doesn't seem like an overheating issue, PSU is highly-rated and should provide more than enough power...
Any further troubleshooting advice would be really appreciated. Can I narrow it down without a spare GPU/PSU/mobo for testing?
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