Solve the problem of the white background of the win7 system desktop icon

  
1. Use the shortcut key WIN+R to call up the running window, then enter CMD to open the command prompt.

2, then execute the following command sequence in the command prompt:
taskkill /im explorer.exe /f
cd /d% userprofile% appdatalocal
del iconcache.db /a
start explorer.exe
exit

3, meaning more specific method for the first ending Explorer Explorer, and then delete cache files, and then re-run a process resource manager.

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