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Installation Troubleshooting 19
ACU16-C & NHB32-C Owner’s Manual
ENGLISH
•If for some reason installation of the Yamaha USB Driver fails, the ACU16-C/NHB32-C
may be registered as an unknown device and you may not be able to reinstall the driver until
the unknown device is deleted. In this case, open the System control panel, click the Device
Manager tab, and select the “View devices by connection” option. If an item called “Other
devices” appears in the list, click it. If there’s an item called “Unknown device,” select it and
then click the Remove button. Disconnect the USB cable, then reconnect it, and now try
installing the driver again.
How to remove & reinstall the Yamaha USB MIDI Driver
• Windows 98, Me: Presuming that the Yamaha USB MIDI Driver was installed successfully,
and that the ACU16-C/NHB32-C has been recognized correctly, the driver can be removed
from your computer as follows. Open the System control panel, click the Device Manager
tab, select the “YAMAHA USB MIDI Driver,” and then click the Remove button. After delet-
ing the following files, disconnect the USB cable, reconnect it, and then reinstall the driver
again.
Windows\Inf\Other\ACU16-C.inf (or NHB32-C.inf)
Windows\System\Xgusb.drv
Windows\System\Ymidusb.sys
Improving performance
•If your computer seems unresponsive, make sure it satisfies the system requirements
(page 10).
• Quit any other applications that you are not using.
Cannot suspend or resume your computer
•Suspend will not work if there are any MIDI applications open.
• Windows 2000: Depending on the USB controller, etc., on some systems, suspend and
resume may not work properly. If the ACU16-C/NHB32-C stops responding, try discon-
necting and reconnecting the USB cable.