pure_fun

摘錄自 Microsoft

SYMPTOMS
Some icons in My Computer, Windows Explorer, on the desktop, or in the Quick Launch toolbar may randomly change.
CAUSE
This behavior may occur if the icon cache is not properly updated.
RESOLUTION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To resolve this behavior, use one or more of the following methods: • Press the F5 key to refresh the icons in the current folder.
• Close and then reopen a window that contains incorrect icons.
• Restart your computer.
• Re-create the ShellIconCache file. This file is re-created automatically when you change your display's color depth. Follow these steps to change your display's color depth to a new setting and then change it back to the original setting:1. Right-click the desktop and then click Properties.
2. Click the Settings tab.
3. Change the color depth from the current setting to a new setting. For example, change from Highest (32 bit) to Lowest (16 bit).
4. Click Apply, and then click Yes to accept the changes.
5. Change the color depth back to its original setting.
6. Click Apply, and then click Yes to accept the changes.

• Using Registry Editor, add the Max Cached Icons string value with a value data of 2000 to the following registry key, and then restart your computer:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer
If the icons are still incorrect, delete the ShellIconCache file. The Max Cached Icons value data range is between 100 and 4096. The default value is 500.