User guide
20 Matrox G450 MMS – User Guide
Problem After the startup screen, or after display settings are changed, the
screen image is garbled or unusable
(blank screen, rolling or overlapping screen images)
1
Cause
Analog monitors only
– The Matrox display driver may be trying to use settings your
monitor doesn’t support. This can happen if a monitor was never selected in the software and
the display resolution was changed to one your monitor doesn’t support, or if the monitor
connected to your computer was changed without changing it in the software.
1
Solution
Make sure the correct monitor is selected in Windows.
Windows 2000/XP –
1
If your primary display is unusable, restart your computer in VGA mode (see “Restarting
in VGA mode”, page 18).
2
Right-click your Windows desktop background, then click
Properties
Æ
Settings
.
3
Move the
Screen area
(Windows 2000) or
Screen resolution
(Windows XP) slider down
to its lowest setting, then click
OK
.
4
Restart your computer normally.
5
Make sure the correct monitor is selected in Windows (see “Monitor setup”, page 9).
6
Make sure you’re not using inappropriate monitor setting customizations: Access the
PowerDesk
Monitor Settings
property sheet (see “Accessing PowerDesk property sheets”,
page 9), then click
Delete all customizations
.
7
If necessary, restore your original display settings (see steps 2 and 3).
2
Windows NT 4.0 –
1
If your primary display is unusable, restart your computer in VGA mode (see “Restarting
in VGA mode”, page 18).
2
Right-click your Windows desktop background, then click
Properties
Æ
Settings
.
Windows may prompt you that the display settings are incorrect for the current mode;
click
OK
to continue.
3
Move the
Desktop area
slider down to its lowest setting, then click
OK
.
WA R N I N G :
If incorrect software monitor settings are applied,
some
monitors can be
permanently damaged. For more information, see your monitor manual.
Note:
In multi-display mode, each display has its own monitor settings (refresh rates).
Make sure correct software monitor settings are selected for
each
monitor.