Win7 desktop icons have become the same how to do

Have you ever encountered a desktop image in the win7 system that has become the same, in fact, this is caused by some misoperations, this tutorial provides a solution for everyone.
This problem is caused by the file association of the file of the shortcut type being modified. We can solve this problem by the following method:
1. Press the key combination <;Win+R” call up the run command box, type regedit.exe in the "Open" column, press Enter, open the registry editor. (This section deals with registry changes, please make a backup of related items before operation.)

(If the user account control window pops up, please allow to continue)

2. In the Registry Editor, navigate to the HKEY_CURRENT_USERSOFTWAREMICROSOFTWINDOWS currentversionExplorerFileExts.lnk path. (As shown in the figure below) I think that all the items except openwithlist and openwithprogids will be deleted.

3. Expand openwithlist and openwithprogids respectively. In the detail window on the right, delete all key values ​​except the default key.

Exit the registry after the modification is completed.
Check if the shortcut icon has been restored?
If there are still icons that don't display properly, think that you can try our second solution again:
1. Right-click on the blank space to select “Personalize”.

2. On the left side of the window, click “Change desktop icon”.

3. In the pop-up desktop icon settings window, click “restore defaults" and press “OK" to save changes.