This pattern points to either a background startup/service conflict or a file association/image handler problem in Windows Explorer. Since a full scan already found nothing, use this order:
- Test with a Clean Boot
- Press Ctrl + R, type msconfig, and press Enter.
- Open the Services tab.
- Check Hide all Microsoft services.
- Select Disable All.
- Open Task Manager > Startup tab, and disable startup items.
- Restart the PC.
- If the delay disappears, a third-party service or startup app is causing the spinning blue wheel.
- Test in Safe Mode
- Press Ctrl + R, type msconfig, and press Enter.
- Open the Boot tab.
- Check Safe boot and select Network.
- Restart.
- If the problem does not occur in Safe Mode, that also indicates a third-party driver, service, or shell extension is involved.
- To exit Safe Mode, open msconfig again and set Normal startup, then restart.
- Check default app associations for files that hang
- Go to Settings > Apps > Default apps.
- Set the default photo viewer and verify common file types such as .jpg and .png are associated correctly.
- If image files are part of the delay, switch temporarily to another built-in viewer, test, then switch back.
- Repair or reset Microsoft Photos
- Go to Settings > Apps.
- Find Microsoft Photos.
- Open Advanced options.
- Select Repair first.
- If needed, select Reset.
- Restart the PC.
- Repair Windows system files
- Open Command Prompt as administrator.
- Run:
DISM /Online /Cleanup-image /Checkhealth DISM /Online /Cleanup-image /Scanhealth DISM /Online /Cleanup-image /Restorehealth sfc /scannow - Restart after the scans complete.
- Install Windows updates
- In Windows 10, go to Start > Settings > Update & security > Windows Update.
- Select Check online for updates from Microsoft Update.
- Install available updates and restart.
If the issue affects nearly everything clicked in Explorer, the most useful result is whether Clean Boot or Safe Mode changes the behavior. That separates a Windows core issue from a third-party service, startup app, or extension.