EXFO FTB-500 - Manual (Page 302)

Troubleshooting
294 FTB-500
Solving Common Problems
When I try to activate
Windows on my unit for the
first time, a message is
displayed, indicating that the
product key cannot be used
or is not working.
The activation of Windows
was skipped during the
migration process from
Windows XP to Windows
Pro 8.1, and the unit has
kept a default product key.

From the Charm bar,
select Settings >
Change PC settings >
Activate Windows.

Tap Enter key and enter
the Windows product
key that you received
with your migration
package.

Follow the on-screen
instructions.
If the problem persists,
contact EXFO.
My unit is not responding. The system has
encountered a problem.
Press the On/Off button for
ten seconds to force a
hardware reset on the unit.
The PDF reader does not
switch to the language that I
have selected in Windows.
The language codes of the
PDF reader may differ from
those used in Windows.
Open the PDF reader and
select the desired language
directly.
The screen remains black
even if the unit is turned on.
The display parameters are
not correctly set.

If no external monitor is
connected, press the
backlight level button.

If an external monitor is
connected, verify the
brightness settings in
Windows.
Problem Possible Cause Solution