Gå in på www.steampowered.com sen support och sen kommer du att se video options. Du klickar du där.
Sen kommer det fram massa texter som är understryckta klicka på:
Reset Video Settings and Force a Video Mode.
sen kommer det stå en guide men jag skriver den här:
How do I force a working DirectX level and video mode?
If the game fails to load with the default settings, you will need to test for a working DirectX level and video mode.
Force a DirectX level
This process may help with some older video cards - some users report the game will run faster, as well:
1.Open Steam
2.Go to the "My Games" tab
3.Right-click the game which needs to be reconfigured
4.Select "Properties" from the menu
5.Click the "Set launch options..." button
6.Add one of the DirectX level launch options specified below - be sure to include 7.a space before the "-" and anything before it.
8.DirectX Level Launch Options
-dxlevel 90 (DirectX v9.0)
-dxlevel 81 (DirectX v8.1)
-dxlevel 80 (DirectX v8.0)
-dxlevel 70 (DirectX v7.0)
9.Force a Video Mode
Follow these instructions to configure your video mode and resolution before launching a game:
Important Note
If you are forcing a refresh rate on your system (this is not recommended), you will need to ensure that you specify the forced refresh rate in the launch options.
Open Steam
Go to the "My Games" tab
Right-click the game which needs to be reconfigured
Select "Properties" from the menu
Click the "Set launch options..." button
Add -gl at the end of the line, be sure to include a space before the "-" and anything before it.
Specify the appropriate Video Mode and Video Option switches from the lists below
Video Mode Launch Options
Use the -w # switch (where "#" is a number from the list below) to specify the display resolution:
640 (640x480) GoldSource Only
720 (720x576)
800 (800x600)
1024 (1024x768) - This mode offers the best performance for most cards
1152 (1152x864)
1280 (1280x1024) - This mode is optimal for high-end cards
1600 (1600x1200) - This mode requires a high-end monitor and a high-performance card
Notes on Display Resolution Settings
Higher resolutions will affect the Frames Per Second which your machine can display (800x600 & up)
640x480 resolution may run slower than 800x600 resolution on newer video cards.
Supported Video Options
-d3d use the Direct3D engine GoldSource Only
-gl use the OpenGL engine GoldSource Only
-soft use the Software engine
-width # (where "#" is the width in pixels of desired video mode) sets the video mode width
-w # (see the Supported Video Modes list above)
-fullscreen or -full use Full Screen mode (default)
-startwindowed / -sw / -windowed / -window / -win use the Window display mode (game appears as a window on the desktop)
hoppas att det hjälper.
P.S hoppas du kan engelska :P