What should I do if my win10 computer icon keeps flashing?

Solution to the win10 computer icon that keeps flashing: First press [win r] to open run, enter regedit, and click OK; then find the [.pdf] folder in the opened registry editor; finally delete it Userchoice item is enough.

#The operating environment of this article: windows10 system, thinkpad t480 computer.

First we press the "Win R" key on the keyboard to open Run, enter "regedit" during Run, and open the Registry Editor, as shown in the figure below.

In the registry editor interface, expand to the following paths:

HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\currentversion\Explorer\FileExts\. pdf

We need to delete the Userchoice item, as shown in the figure below.

If the problem is still not solved after deleting the Userchoice item above, we will delete all key values ​​in Openwithlist except the default and delete all key values ​​in Openwithprogids except the default All key values ​​are deleted.

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