Solved icons stopped showing images of video files

[victorb]

Hello, I have next problem on my Windows 7: icons stopped showing images of video files (but they still show images of pictures). Note that I am already cleaned my computer from temporary internet files and thumbnails. Also unchecked "Always show icons, never thumbnails" in Folder Options>View>.
I noticed that after installation of K-light codec (but uninstallation did not change anything).

 

[victorb]

Solved this problem myself!
Installation of old version (9.5) of K-light codec caused a problem on my computer. I installed version 10 and it works!