Windows & BSOD · medium

How to fix Disk usage at 100% in Task Manager

Error code: DISK-USAGE-100

What this error means

The system gets extremely stuck, the response takes seconds, the disk is lit at 100% in the task manager.

Updated

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Disable the SysMain service
  1. Disable the SysMain service
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
02Upgrade your system from HDD to SSD
  1. Upgrade your system from HDD to SSD
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Wait for Windows Update to complete its background process
  1. Wait for Windows Update to complete its background process
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • SysMain (SuperFetch) or Windows Search aggressively index
  • Weak platter hard disk drive (HDD) as system
  • Corrupt paging file