Solution steps: 1. view Folder Options by organization, display all files with known extension 2. create a text document to copy the following code and change it to the suffix. bat file, and then double-click to run, this method is called win7 Icon cache reconstruction rem close Windows shell program javasertaskkill/f/im cycler.exe rem clear system Icon cache database attrib-h-s-r "% userprofile % \ appData \ Local \ IconCache. db "del/f" % userprofile % \ AppData \ Local \ IconCache. db "attrib/s/d-h-s-r" % userprofile % \ AppData \ Local \ Microsoft \ Windows \ Explorer \ * "del/f" % userprofile % \ AppData \ local \ Microsoft \ Windows \ Explorer \ thumbcache_32.db "del/f" % userprofile % \ AppData \ Local \ Microsoft \ Windows \ Explorer \ thumbcache_96.db "del/f" % userprofile % \ AppData \ local \ Microsoft \ Windows \ Explorer \ thumbcache_102.db "del/f" % userprofile % \ AppData \ Local \ Microsoft \ Windows \ Explorer \ thumbcache_256.db "del/f" % userprofile % \ AppData \ local \ Microsoft \ Windows \ Explorer \ thumbcache_1024.db "del/f" % userprofile % \ AppData \ Local \ Microsoft \ Windows \ Explorer \ thumbcache_idx.db "del/f" % userprofile % \ AppData \ local \ Microsoft \ Windows \ Explorer \ thumbcache_sr.db "rem clear system tray memory icon www.2cto.com echo y | reg delete" HKEY_CLASSES_ROOT \ Local Settings \ Software \ Microsoft \ Windows \ CurrentVersion \ TrayNotify "/ v IconStreamsecho y | reg delete "HKEY_CLASSES_ROOT \ Local Settings \ Software \ Microsoft \ Windows \ CurrentVersion \ TrayNotify"/v PastIconsStream rem restart Windows shell program explorer start explorer