I'm at a loss as to why my Windows 10 laptop is consuming so much CPU from
explorer.exe instances. I've attached two screenshots showing five explorer instances using about 15% CPU each. I have absolutely no idea what they are doing and if I kill them, nothing happens.
The explorer instances are not always there consuming tons of CPU. I haven't been able to really determine a pattern as to when they start consuming all the CPU. The thing that triggers me to look is when my fan kicks in. Once the cooling fan kicks in I know that the CPU is getting railed by these explorer instances. I'm not sure where to go look for information pertaining to these processes and what resources they might be accessing that causes this.
My CPU usage will go up to 95% with these processes and I'm trying to figure what could be causing it.
I've used Process Explorer to try and get more info. If I explore the threads running on the explorer instances they all seem to have this one thread that is consuming the CPU:
Any help is greatly appreciated.
No viruses detected on any scans. The explorer instances will appear even if I am not looking at any files or folders. As for the type of files and folders I am browsing...? Just regular files. The issue is happening as I'm typing this and I have no folder browsing instances of windows explorer open (the processes are still there of course).
Software open on my computer while it's occurring:
- Google Chrome
- Visual Studio 2017
- Outlook 2013
- Task Manager
Upon closing them all (except Task Manager) the processes still persist.
I currently have two explorer.exe threads using 15% CPU each. If I look at the disk activity in Resource Monitor I see nothing being used by either.
Windows 10 Build: Version 1809 (OS Build 17763.316)