Believe this may be a bi-product of you getting the game blocked by your brother.
Could try changing the rendering subsystem manually or before the game starts up? To do manually you just go into the ogre.cfg file in your installed main FH folder and open it, changing the first line to the different rendering mode.
Where it says Render System=
you will want to put the opposite one of what it currently has.
Render System=Direct3D9 Rendering Subsystem
[Direct3D9 Rendering Subsystem]
Allow NVPerfHUD=No
FSAA=0
Floating-point mode=Fastest
Full Screen=No
Rendering Device=Monitor-1-Intel(R) HD Graphics
Resource Creation Policy=Create on all devices
VSync=No
VSync Interval=1
Video Mode=800 x 600 @ 32-bit colour
sRGB Gamma Conversion=No
[OpenGL Rendering Subsystem]
Colour Depth=32
Display Frequency=N/A
FSAA=0
Full Screen=No
RTT Preferred Mode=FBO
VSync=No
VSync Interval=1
Video Mode=800 x 600
sRGB Gamma Conversion=No