Forum Discussion
Windows 11 disk usage 100% even with no apps open, very laggy
My disk usage hits 100% right after boot with no apps running. The system is extremely slow, even opening a folder takes a long time. Checked for bad sectors and disabled Superfetch, still the same.
3 Replies
Use the resource monitor to what app is doing all the disk IO. Replace your drive with an SSD if you haven't done so already.
Maybe it's doing windows updates. I no longer shut down my machine when I'm done using it so it's always ready to do work for ME when I sit in front of it.
Disable the SysMain and Windows Search services in Services Manager, and run the chkdsk /f /r command to check for disk errors.
Hello,
Try temporarily disabling SysMain and Connected User Experiences and Telemetry services, see if that helps.
If your device has StorAHCI.sys driver, you can attempt to try Message Signaled Interrupt (MSI) mode disabled. This could significantly reduce disk usage.
Additionally, see if other suggestions in this fix helps you:
https://www.kapilarya.com/fix-100-disk-usage-in-windows-11
Let us know if this helps!
Note: Included link in this reply refers to blog by a trusted Microsoft MVP.
