Solution to Windows 7 desktop dotted box

There is no doubt that the win7 interface is very beautiful, but some users will find a dotted box around the desktop icon during use, which greatly compromises the appearance of win7.
Some people say that the Registry is modified and the userpreference item is deleted, but the effect is still; restart explorer, yes, but press ctrl or up or down, or the number key.
Another person said, just refresh it, press the logo key, or click the menu key in the lower left corner. People who say these things don't have to join in, because you have never encountered such a situation. You don't understand it...
The following describes the countermeasures (which may only work for some users)
1. Have you used multiple wallpapers for regular replacement? If yes, you can continue reading it. If not, I'm sorry, this method won't work.
2. You must stop using multiple wallpapers and select one you like.
3. If there is no dotted box on the desktop, You can refresh it on the desktop. Select an icon, click the menu key in the lower left corner, and then click the desktop to see if the blue focus of the selected icon disappears. If yes, you will be done. If not, continue to look down.
4. Start the task manager, locate the explorer process, and end the process. Then create a new explorer process (restart or log out ). Next, perform Step 3. If the effect is the same as that described in step 3, the operation is successful. If the results are different, the Operation will fail.