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These DirectX settings allow you to change some of the DirectDraw and Direct3D video acceleration parameters.

Open your registry and find or create the key below.

Create a new DWORD value for each optional item from the list below and set it to "1" to enable the setting or "0" to disable it.

• DisableAGPSupport - Disable AGP support
• DisableMMX - Disable MMX processor extensions
• DisableWiderSurfaces - Disable Wider Surfaces support
• DisableInactivate - Disable dual-head video card debugging
• EnablePrintScreen - Enable Print Screen capture
• ModeXOnly - Use Mode-X for older video cards
• ShowFrameRate - Display the frame rate (if supported)
• DisableNoSysLock - Disable long-duration locks on video memory
• ForceNoSysLock - Force use of long-duration locks on video memory
• EmulationOnly - Enable software emulation layer for older video cards

Restart Windows for the change to take effect.

		(Default)	REG_SZ	(value not set)
		DisableAGPSupport	REG_DWORD	0x00000000 (0)
		DisableMMX	REG_DWORD	0x00000000 (0)
		DisableWiderSurfaces	REG_DWORD	0x00000000 (0)
		DisableInactivate	REG_DWORD	0x00000000 (0)
		EnablePrintScreen	REG_DWORD	0x00000001 (1)
		ModeXOnly	REG_DWORD	0x00000000 (0)
		ShowFrameRate	REG_DWORD	0x00000001 (1)
		DisableNoSysLock	REG_DWORD	0x00000000 (0)
		ForceNoSysLock	REG_DWORD	0x00000001 (1)
		EmulationOnly	REG_DWORD	0x00000000 (0)

	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectDraw

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.