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07-11-2018 04:07 AM - edited 07-11-2018 05:17 AM
I have exactly the same issue with this laptop.
But I have this even when I perform clean install Windows 10 without updates.
In few hours i try solution with those services.
Did you find which one service causing this?
07-11-2018 07:26 AM
Sorry to hear that.
Next what I try to do is to disable devices in device manager.
Maybe one of devices/driver causing acpi.sys and interruptions.
In forums I read that in some cases intel/realtek network adapters, sound/sata controllers, or power save settings causing this.
This issue is very irritating, because this is laptop for games, and system eats ~30% CPU
07-11-2018 07:40 AM
Same here. When restart or put to sleep mode and wake, system is normal.
But when power off and on in few minutes or later acpi.sys/interruptions return.
I tried this solution, and it helps for 2 days until I install some software, and problem returns:
"I had similar issue with xxx E6540, 4 cores, one core permanently at 100%, process: System, thread: acpi.sys. Thanks to @ThePosey I tried to turn off Device Manager -> Network Adapters -> Intel(R) Ethernet Connection I217-LM. Process usage immediately dropped to 1%. When turned on -> one thread started to work at 100% again. Then I noticed that when I switched Power Options -> Power Plans, CPU usage characteristic changed (one core 100% -> 80%, other core 0% -> 50%, depended on the selected profile). Then I researched the problem further and found out a solution: Network Connections -> Intel(R) Ethernet Connection I217-LM -> right click Properties -> Configure -> Power Management -> section Wake on LAN -> disable Wake on Magic Packet AND Wake on Pattern Match. Process usage immediately dropped to 1%, problem solved."
07-11-2018 06:41 PM
did you try Restoring the laptop to the factory settings?
esc at boot then f11
so far no system proccess and the laptop feels cleaner downside i have to download windows updates again
but all personal data on my non windows drive is intact
11-20-2018 08:00 AM
Have you guys solved this problem finally ? I'm fighting with this (acpi.sys + 0x42f50 process) for a while now and pretty much there's no solution yet. For my omen there's only one way to deal with it for some time - few restarts, but this solution it's not an option. Thanks!