Windows 7操作系统下清理图标缓存的方法：
rem 关闭Windows外壳程序explorer
taskkill /f /im explorer.exe
rem 清理系统图标缓存数据库
attrib -h -s -r "%userprofile%AppDataLocalIconCache.db"
del /f "%userprofile%AppDataLocalIconCache.db"
attrib /s /d -h -s -r "%userprofile%AppDataLocalMicrosoftWindowsExplorer*"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_32.db"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_96.db"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_102.db"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_256.db"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_1024.db"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_idx.db"
del /f "%userprofile%AppDataLocalMicrosoftWindowsExplorerthumbcache_sr.db"
rem 清理 系统托盘记忆的图标
echo y|reg delete "HKEY_CLASSES_ROOTLocal SettingsSoftwareMicrosoftWindowsCurrentVersionTrayNotify" /v IconStreams
echo y|reg delete "HKEY_CLASSES_ROOTLocal SettingsSoftwareMicrosoftWindowsCurrentVersionTrayNotify" /v PastIconsStream
rem 重启Windows外壳程序explorer
start explorer
将以上代码粘贴到记事本，然后保存为“XXXX.bat”，用管理员权限运行即可。
最后说一句：通过以上的步骤，就可以咯！