If your icons have turned white or not displayed correctly you may have a corrupt icon cache.
To reset the icon cache open Powershell/CMD in the directory below.
%userprofile%\AppData\Local\Microsoft\Windows\Explorer
Exit all Explorer windows or kill task in Task Manager to allow deletion of the files below
Delete all iconcache.db files in %userprofile%\AppData\Local\Microsoft\Windows\Explorer
del iconcache*
Open another Powershell/CMD window for the following directory.
%userprofile%\AppData\Local
Delete the file iconcache.db if it exists in %userprofile%\AppData\Local
del iconcache.db
Sign out or hide/show desktop icons to rebuild icon cache