<Cannot use the driver though the driver is installed>
Windows XP/2000 place a limitation on the number of MIDI and audio devices that can be installed. Even changes from one USB connector to another are counted.
If this limitation is exceeded, you cannot use the device even if it is installed. This is due to the limitations of the OS and is not the problem of the driver.

In this case, you may be able to achieve normal operation by uninstalling the MIDI/Audio drivers, then installing them again.

<Cautions concerning re-installation>

1. Install according to the procedure explained in the Readme supplied with the driver.
2. First, install the driver that could not be used when it was installed before, and check to see if it now works.
   

   *	If it can be used now, you can assume that you couldn't use it before due to "the limitations of the OS." You can proceed to install the required driver(s).
   *	If it cannot be used, the following causes can be considered: The problem has occurred through a combination of "MIDI/Audio drivers from some other company, or not for USB" and "the limitations of the OS."   -> The problem may be solved by uninstalling each driver individually or re-installing the OS. Other   -> Please refer to "Troubleshooting" in the Readme supplied with the driver.

Using Clean1X

In step 4 of "Using CleanAll," double-click Clean1X.exe instead of CleanAll.exe.

Cautions and Limitations

• In certain cases, the driver may also be uninstalled for certain products made by other manufacturers (*) that use the standard driver provided by the operating system.
• The problem cannot be solved by this tool when the problem has occurred by a combination of "MIDI/Audio drivers of the other company and not for USB" and "the limitation of OS." You may need to uninstall each driver individually or re-install OS.
• If you are using the EDIROL UA-1X or certain products made by other manufacturers (*) with drivers other than the standard driver provided by the operating system, you must uninstall those drivers before you run this tool.
  
  * By "certain products made by other manufacturers" we mean the following products.
  
  • Products for which Windows XP shows a device name of "USB Audio CODEC"
  • Products for which Windows 2000 shows a device name of "USB Audio Device" and also shows "USB Audio CODEC" in the Properties window of the Device Manager

    *	For details on how to check, refer to "Checking in Windows 2000."

<Checking in Windows 2000>

1. From the Windows Start menu, open "Settings | Control Panel."
2. Open the "Control Panel," and double-click "System."
3. Click the "Hardware" tab.
4. Click the [Device Manager].
5. Double-click "Sound, Video and Game Controllers" to see the list of devices.
6. Right-click the "USB audio device" shown in the list, and choose "Properties" from the menu that appears.
7. In the dialog box that appears, check whether the "Location" field indicates "USB Audio CODEC."