Sometimes my desktop freezes. All icons go white and accept no action. If I go to Task Manager, kill explorer.exe and restart it, it go back to normal.
How can I troubleshoot this, to know what is causing this?
The first thing you should try, open
On 32-bit go to:
Right click the key
Under this key there are several other keys with names like
Those are modules some programs install on Windows Explorer, and usually are only good to slow down your computer. I never got a case where they were useful for something.
If it does not help, its likely that your problem is related to modules generating previews / thumbnails on videos or other file types like AutoCAD etc. Those can be disabled too like is explained in this tutorial and can greatly improve your Windows Explorer performance.