I am posting these commands again. It is "buried" in another thread. I'm just looking for an explanation of this and thought viewers may not see it. It is one MVP's "check" before going to another step after I explained my current progress.
Before you do a reset (which will no doubt fix things), try deleting this file and rebooting.
You need to remove the desktop (explorer.exe) in order to delete the file. You can do it this way at an Administrator Command Prompt (WinidowsKey + X). Be careful to get the spaces correct.
taskkill /F /IM explorer.exe
cd /d %userprofile%\AppData\Local
attrib -h IconCache.db
I think I get the general thought, but can anyone explain its purpose precisely? Safe to do?