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Troubleshooting
Did you log on to Windows with the appropriate user privileges?
You must log onto Windows using one of the following user names.
• A user name belonging to the Administrators group, such as Administrator
• A user name whose account type is Computer Administrator
* For details, ask the system administrator for your computer.
In some cases, you may be unable to install the driver because of the “Driver signing option”
settings.
Refer to
“Driver signing option settings (Windows XP)”
(p. 39) and make the appropriate settings.
Could other software be running, perhaps in the background (such as anti-virus software)?
The installation may not occur correctly if other software is running. Be sure to close all other
software before you perform the installation.
Could the UA-25EX’s Advanced driver switch be OFF?
Turn the UA-25EX’s Advanced driver switch ON, and install the driver once again.
After you connect the UA-25EX, it may take several tens of seconds or several minutes before it is
recognized by your computer.
This is not a malfunction.
Please wait until the Found New Hardware Wizard appears.
Is the UA-25EX connected?
Make sure that the UA-25EX is correctly connected to your computer.
Could your computer be operating on its battery?
Operation may be unstable if your computer is operating on battery power.
Please use your computer with its power supply connected.
Could you be using a bus-powered USB hub (a hub that does not require a power supply)?
The UA-25EX cannot be used with a bus-powered USB hub (a hub that does not need a separate
power supply). Use it with a self-powered USB hub (a hub that has an internal power supply or AC
adaptor).
Could a USB device other than a mouse or keyboard be connected?
Disconnect all USB devices (other than a mouse and keyboard, if used) from your computer before
performing the installation.
Check the power management settings of your computer.
Your computer’s power management settings may be limiting the power that is supplied to USB.
Take a look at your computer’s power management settings.
➝ “Power management settings” (p. 42)
Can’t install the driver according to the procedureInstallation is not successfully completed when you connect the UA-25EXUA-25EXCW_e.book 47 ページ ２００９年４月１３日 月曜日 午後１２時３３分