GroupBox border is striking through the title in WPF

Question

I have a wpf app with a dark background and I am using White Font color.

For some reason on some computers that the program is installed, the white border strikes through the label. Has anyone else ever had this problem? How can I get around this?

XAML Below:

<GroupBox Header="Enter tester information" Margin="56,161,41,212" Name="groupBox1" FontFamily="Comic Sans MS" FontSize="14" Foreground="White">
       <Grid>
            <Label Content="First Name:" Height="28" HorizontalAlignment="Left" Margin="24,19,0,0" Name="label4" VerticalAlignment="Top" Width="95" HorizontalContentAlignment="Right" Foreground="White" />
            <TextBox Height="25" HorizontalAlignment="Left" Margin="125,19,0,0" Name="txtFirstName" VerticalAlignment="Top" Width="212" KeyboardNavigation.TabIndex=" 1" />
            <Label Content="Last Name:" Height="28" HorizontalAlignment="Left" Margin="24,58,0,0" Name="label5" VerticalAlignment="Top" Width="95" HorizontalContentAlignment="Right" Foreground="White" />
            <TextBox Height="25" HorizontalAlignment="Left" Margin="125,58,0,0" Name="txtLastName" VerticalAlignment="Top" Width="212" KeyboardNavigation.TabIndex="2" />
        </Grid>
    </GroupBox>

Thanks,

MW

Answer 1

This has to do with the system that the software was installed on. The video card and driver is old and outdated. WPF uses the system to render the graphics. I need to find out the minimum system requirements for a WPF application to render as intended.