电脑症状：WIN7的系统，桌面上的图标显示的不正常，快捷方式显示的是未知程序。看不到程序默认图标，快捷方式图标不显示。
解决方法：删除程序图标缓存即可。
将下面的内容复制到记事本保存为“RepairIcon.bat”然后双击运行即可:
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%\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 清理 系统托盘记忆的图标 echo y|reg delete "HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify" /v IconStreams echo y|reg delete "HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\TrayNotify" /v PastIconsStream rem 重启Windows外壳程序explorer start explorer