This problem occurs if you modified the
MountedDevices
registry value to change the boot drive letter assignment or the system drive letter assignment.
To resolve this problem, you must remove the whole contents of the
MountedDevices
registry key. This key is located in the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
223188 How to change the system/boot drive letter in Windows 2000
You cannot modify the
MountedDevices
registry key in Windows XP because there are many hard-coded paths to the C:\Windows drive. These hard-coded paths may not load. Then, that behavior provokes the WPA-related error code.