|Did you increase the size of the icon cache (mentioned in my How-to)? This usually fixes the obstinate cases. If you are happy in the registry make the setting 4096.|
If you don't like dabbling in the registry then do this:
Open NotePad and Copy/Paste all that is between the lines below into it.
Windows Registry Editor Version 5.00
"Max Cached Icons"="4096"
Note that there must be either one or two line spaces at the end (included).
Save your NotePad file somewhere (desktop wil do) as iconfix.txt
Open it by all means to check it looks right but don't alter anything except adding one or two line spaces at the end if they haven't arrived. Next change its file name from iconfix.txt to iconfix.reg then right click it and choose Run As Administrator.
Say yes to all the prompts and the cache size has now been increased. It might take a few computer restarts before the cache starts to fill out and cure your issue.
Always pop back and let us know the outcome - thanks