I'm having a really strange issue with my laptop (Lenovo Y510P). Every so often, it will jump up to 100% disk usage. It looks like the culprit processes are several Windows processes. This happens even when I'm doing nothing on the machine and no applications are running. When I'm actually running a program, it seems to spike up even more (if it's not happening at the time that I'm running the program). For example, it'll be running at a normal amount of usage, but if I start up a program and use it for a few minutes, the Performance Monitor shows it spiking from almost nothing to 100% and back down. Comparing this to my desktop, it never gets close to 100% usage.
The problem processes
seem to be:
Windows Host Process (Rundll32)
Antimalware Service Executable (Windows Defender)
"System" process
It occasionally will die down for a short period of time, but will eventually go back up. I thought it may be some kind of malware, but Windows Defender didn't find anything after a Full Scan.
I'd appreciate any ideas.
http://imgur.com/weK6kdS