JPG and DNG files not showing images

1. Quick fixes
Step 1: Reset the photo viewer
Right click on the picture → open mode → select other applications
Select “Photos” application → Check “Always use this application”.
If it doesn't work, try to use Windows Photo Viewer instead (you need to enable it manually):
powershell
reg add “HKCR\Applications\photoviewer.dll\shell\open\command” /t REG_SZ /d “%SystemRoot%\System32\rundll32.exe `”%ProgramFiles%\Windows Photo Viewer\PhotoViewer.dll`“, ImageView_Fullscreen %1” /f
2. Rebuild the thumbnail cache
Open File Explorer → View → Check “Hidden Items”
Delete the following cache files:
%LocalAppData%\Microsoft\Windows\Explorer\thumbcache_*.db
Restart the computer (the system will rebuild the cache automatically)
3. Check the file association
Repair method:
Open Settings → Applications → Default Applications
Search for “.jpg” → select “Photos” as default app.
Repeat the same for “.dng”
4. Driver/decoder problem
 Solution:
Update the graphics card driver:
Right-click Start Menu → Device Manager → Display Adapters → Right-click to update driver.
Install the RAW Image Extension:
Install “Raw Image Extension” from Microsoft Store.
5. Ultimate Repair Solution
 System Integrity Check:
Run CMD as administrator:
cmd
sfc /scannow
dism /online /cleanup-image /restorehealth
Create a new user account to test:
Settings → Accounts → Other users → Add local account