My Windows 11 PC occasionally freezes for a moment when disk usage reaches 100%. It happens most often during startup or while running demanding programs such as games. Task Manager usually attributes the activity to System, although games sometimes contribute as well. CrystalDiskInfo reports that the SSD is healthy. I have already tried disabling Superfetch, keeping memory usage around 50–60%, and limiting antimalware scans, but nothing has helped. The system has a 1TB Crucial BX500 SATA SSD, 32GB of DDR4 RAM, an Intel Core i5-10400F, and a GTX 1650. What should I check next?
4 Answers
Make sure Windows is fully updated and restart regularly. Updates can download or install in the background and may cause heavy disk activity, especially shortly after startup. Also check Task Manager's Startup apps list and turn off programs you do not need launching automatically.
Use Resource Monitor rather than only Task Manager. Run resmon.exe, open the Disk tab, and sort by total activity while the spike is happening. Windows Update, antivirus scans, backup tools, and indexing are common causes. Check whether the problem began after installing software or changing a driver, and temporarily disable unnecessary startup programs to establish a baseline.
Run a full Windows Security scan and, if needed, a second reputable malware scanner. Check that you are not running multiple real-time antivirus products at once. You can briefly test whether Defender is responsible by scheduling the test carefully, but do not leave protection disabled; add an appropriate game or development-folder exclusion only if you understand the security tradeoff.
The SSD may still deserve a closer check even if its health status is good. Confirm that its firmware and the motherboard's storage drivers are current, leave plenty of free space, and check Event Viewer for disk, storahci, or NTFS errors. Also verify that backups work before changing BIOS or storage settings. If the issue continues, testing with another drive or checking SATA cables and ports can help separate a Windows/software problem from hardware.
In my case, the busiest entries were pagefile.sys, System Volume Information, the NTFS log file, and background activity from Edge and Adobe. Those entries can point to paging, restore-point activity, filesystem logging, or applications doing background work rather than a failing drive.