You might try updating the video drivers (directly from Nvidia, not Windows Update) and installing the correct monitor driver.

I'm running the latest nvidia release 169.25 drivers. The monitor is a 21" viewsonic connected with BNC cables so the OS doesn't see the monitor. No problems with GC11 DL or DA, or any other games for that matter. Disabling windows defender let me play a few turns but the display driver still quit responding after a few minutes with the same last 5 debug entries.

Driver Version: 7.15.0011.6375
Driver Date: 10/4/2007 18:14:00

That's not the version reported in the debug.

Your right, I just downloaded the 169.25 drivers I never installed them.

So far so good no crashes yet, thanks.

Well it helped but it still crashes the display driver after a few minutes.

Debug Message: Version v1.80g Twilight of the Arnor beta 6 last updated on: Wed Mar 19 11:37:27 2008
Debug Message: Checking DX Version.
Debug Message: *********DXDiag info follows.*********
System Info
Time: 3/26/2008, 15:47:08
DirectX Version: DirectX 10
Machine Name: MARK-PC
Operating System: Windows Vista™ Ultimate (6.0, Build 6001) Service Pack 1, v.668 (6001.longhorn_rc1.071129-2315)
Languages: English (Regional Setting: English)
System Manufacturer: NVIDIA
System Model: 122-CK-NF68
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz (2 CPUs), ~2.1GHz
Physical Memory: 4094MB RAM
Page File: 1550MB used, 6807MB available
Windows Dir: C:\Windows


Display Info
Display device 1:
Device Name: \\.\DISPLAY1
Card Name: NVIDIA GeForce 8800 GTS
Manufacturer: NVIDIA
Chip Type: GeForce 8800 GTS
DAC Type: Integrated RAMDAC
Key Device: Enum\PCI\VEN_10DE&DEV_0193&SUBSYS_C8253842&REV_A2
Display Memory: 2395 MB
Current Display Mode: 1600 x 1200 (32 bit) (60Hz)
Monitor Name: Generic Non-PnP Monitor
Monitor Max Resolution:
Driver Name: nvd3dum,nvd3dumx.dll,nvwgf2um,nvwgf2umx.dll
Driver Version: 7.15.0011.6925
Driver Date: 12/11/2007 17:06:00
DirectX Acceleration Enabled: Yes



Sound info
Sound device 1:
Description: Speakers (Creative SB X-Fi)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_1102&DEV_0005&SUBSYS_00211102&REV_00
Manufacturer ID: 1
Product ID: 100
Driver Name: ctaud2k.sys
Provider: Creative
Driver Version: 6.00.0001.1304
Driver Date: 10/26/2007 00:34:18
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0

Sound device 1:
Description: Digital Output Device (SPDIF) (High Definition Audio Device)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0885&SUBSYS_10ECE601&REV_1001
Manufacturer ID: 1
Product ID: 100
Driver Name: HdAudio.sys
Provider: Microsoft
Driver Version: 6.00.5840.16387
Driver Date: 11/2/2006 01:28:10
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0

Sound device 1:
Description: SPDIF Out (Creative SB X-Fi)
Default Sound Playback: No
Default Voice Playback: No
Hardware ID: PCI\VEN_1102&DEV_0005&SUBSYS_00211102&REV_00
Manufacturer ID: 1
Product ID: 100
Driver Name: ctaud2k.sys
Provider: Creative
Driver Version: 6.00.0001.1304
Driver Date: 10/26/2007 00:34:18
Type: WDM
Other Drivers:
Acceleration Level: 1
Cap Flags: 0
Min/Max Sample Rate: 0, 0



Debug Message: *********END dxdiag info.*********
Debug Message: Entering WinMain
Debug Message: ******* Starting Game Shell *******
Debug Message: Going Fullscreen
Debug Message: Preparing to change display settings.
Debug Message: Using hardware vertex processing
Debug Message: Using multilsample setting: D3DMULTISAMPLE_4_SAMPLES
Debug Message: Attempting to create D3DDevice at resolution 1600 x 1200, Windowed: 0, Multisample: 4
Debug Message: Game Resolution: 1600 x 1200
Debug Message: Running fullscreen.
Debug Message: HAL (hw vp): NVIDIA GeForce 8800 GTS
Debug Message: D3DPRESENT_INTERVAL_DEFAULT
Debug Message: Refresh rate: 60
Debug Message: Bit Depth: 32 bit.
Debug Message: *********Checking D3DDevice Caps***********************
Debug Message: A full-color cursor is supported in hardware at high resolution modes.
Debug Message: RGB in format 6:6:6, Masks reported as ff0000:ff00:ff
Debug Message: Now Fullscreen
Debug Message: Shell initialization complete
Debug Message: GalCiv2 is activated.
Debug Message: ***** Initializing Game *****
Debug Message: Timer Frequency is 0 17d7840
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\./Data/ShipTemplates/\*.shipcfg
Debug Message: No files found matching mask ./Data/ShipTemplates/\*.shipcfg
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\shiptemplates\*.shipcfg
Debug Message: Initializing sound card.
Debug Message: initailizing bink
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar\Movies\techs\*.bik
Debug Message: No files found matching mask Movies\techs\*.bik
Debug Message: No files found matching mask Gfx\Tutorials\*.bik
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\Gfx\Movies\*.bik
Debug Message: No files found matching mask Music\*.mp3
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\sfx\*.wav
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\Music\*.mp3
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\Event Music\*.mp3
Debug Message: Create setup screens.
Debug Message: Clear galaxy settings.
Debug Message: Clear influence.
Debug Message: Clear up laws.
Debug Message: Clear first time events.
Debug Message: Clear wonders and trade goods.
Debug Message: Clear sector mapper.
Debug Message: Set mouse.
Debug Message: Set update timer.
Debug Message: No files found matching mask ./Data/*.xml
Debug Message: Clear data definitions.
Debug Message: Killing ship styles:
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\shiptemplates\*.xml
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2./Data/English/\ShipStyles\*.xml
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\ShipStyles\*.xml
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar./Data/\FleetFormations\*.fleet
Debug Message: No files found matching mask ./Data/\FleetFormations\*.fleet
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar\Gfx\Planets\C0*.png
Debug Message: No files found matching mask Gfx\Planets\C0*.png
Debug Message: No files found matching mask gfx/Terrain/1SideN*.png
Debug Message: No files found matching mask gfx/Terrain/1SideE*.png
Debug Message: No files found matching mask gfx/Terrain/1SideS*.png
Debug Message: No files found matching mask gfx/Terrain/1SideW*.png
Debug Message: No files found matching mask gfx/Terrain/2SideN*.png
Debug Message: No files found matching mask gfx/Terrain/2SideE*.png
Debug Message: No files found matching mask gfx/Terrain/2SideS*.png
Debug Message: No files found matching mask gfx/Terrain/2SideW*.png
Debug Message: No files found matching mask gfx/Terrain/3SideN*.png
Debug Message: No files found matching mask gfx/Terrain/3SideE*.png
Debug Message: No files found matching mask gfx/Terrain/3SideS*.png
Debug Message: No files found matching mask gfx/Terrain/3SideW*.png
Debug Message: No files found matching mask gfx/Terrain/4SideN*.png
Debug Message: No files found matching mask gfx/Terrain/4SideE*.png
Debug Message: No files found matching mask gfx/Terrain/4SideS*.png
Debug Message: No files found matching mask gfx/Terrain/4SideW*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/1SideN*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/1SideE*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/1SideS*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/1SideW*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/2SideN*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/2SideE*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/2SideS*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/2SideW*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/3SideN*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/3SideE*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/3SideS*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/3SideW*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/4SideN*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/4SideE*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/4SideS*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar/gfx/Terrain/4SideW*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\./Data/ShipTemplates/\*.shipcfg
Debug Message: No files found matching mask ./Data/ShipTemplates/\*.shipcfg
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\shiptemplates\*.shipcfg
Debug Message: Reading Star Names
Debug Message: Reading Star Names... Done
Debug Message: No files found matching mask ./Data/English/Tutorials/*.xml
Debug Message: No files found matching mask ./Data/English/Campaigns/*.gc2Campaign
Debug Message: No files found matching mask ./Data/*.xml
Debug Message: Clear data definitions.
Debug Message: Killing ship styles:
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\shiptemplates\*.xml
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2./Data/English/\ShipStyles\*.xml
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\ShipStyles\*.xml
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar./Data/\FleetFormations\*.fleet
Debug Message: No files found matching mask ./Data/\FleetFormations\*.fleet
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\DarkAvatar\Gfx\Planets\C0*.png
Debug Message: No files found matching mask Gfx\Planets\C0*.png
Debug Message: No files found matching mask C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2\./Data/ShipTemplates/\*.shipcfg
Debug Message: No files found matching mask ./Data/ShipTemplates/\*.shipcfg
Debug Message: No files found matching mask C:\Users\Mark\Documents\My Games\GC2TwilightArnor\shiptemplates\*.shipcfg
Debug Message: WARNING: Starbase module: Devastation Beam could not find tech requirement: Subspace Ripper in galaxy tech list - Using no tech requirement.
Debug Message: WARNING: Starbase module: Foreign Relations Center could not find tech requirement: Universal Translator in galaxy tech list - Using no tech requirement.
Debug Message: Creating Galaxy
Debug Message: Killing threads.
Debug Message: Kiling civs.
Debug Message: Killing ships.
Debug Message: Killing rallypoints.
Debug Message: Killing misc objects.
Debug Message: Killing stars.
Debug Message: Killing anomalies.
Debug Message: Killing asteroid fields.
Debug Message: Killing asteroid field mining bases.
Debug Message: Killing space resources.
Debug Message: Killing ascension crystals.
Debug Message: Killing colonies and planets.
Debug Message: killing scenario.
Debug Message: Clearing Turn Event Log
Debug Message: Clear galaxy settings.
Debug Message: Clear influence.
Debug Message: Clear up laws.
Debug Message: Clear first time events.
Debug Message: Clear wonders and trade goods.
Debug Message: Clear sector mapper.
Debug Message: Loading custom map: C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2/./Data/English/Campaigns/Darkness Rising.gc2map (3 x 3)
Debug Message: Star Frequency: 3 Max Num Stars: 24
Debug Message: Planet Frequency: 3 Max Num Planets: 76
Debug Message: Num Anomalies: 82
Debug Message: WARNING: Could not find specified ship style '0' for civilization: Terran Alliance. Trying default style name: 'Terran Alliance Style'
Debug Message: CustomPersonalityWnd: Cannot find OBJID Personality_Special_Title
Debug Message: CustomPersonalityWnd: Cannot find OBJID Personality_Special_Disctiption_Spinner_Back
Debug Message: CustomPersonalityWnd: Cannot find OBJID Personality_Special_Disctiption_Title
Debug Error: CustomShipStyleWnd: Unknown edit field ShipList_List_Entry type: CustomListEntry
Debug Error: CustomShipStyleWnd: Unknown edit field ShipList_Avalible_List_Entry type: CustomListEntry
Debug Message: WARNING: Could not find specified ship style '0' for civilization: Terran Alliance. Trying default style name: 'Terran Alliance Style'
Debug Message: Setting Game Options
Debug Message: Creating Civs
Debug Message: WARNING: Could not find specified ship style '0' for civilization: Terran Alliance. Trying default style name: 'Terran Alliance Style'
Debug Message: Terran Alliance: Intellence -> 32
Debug Message: WARNING: Could not find specified ship style '3' for civilization: Drengin Empire. Trying default style name: 'Drengin Empire Style'
Debug Message: Drengin Empire: Intellence -> 73
Debug Message: WARNING: Could not find specified ship style '4' for civilization: Altarian Republic. Trying default style name: 'Altarian Republic Style'
Debug Message: WARNING: Could not find civilization ship style. Using first style we can find.
Debug Message: Altarian Republic: Intellence -> 59
Debug Message: Creating Civs... Done
Debug Message: Updating ZOC.
Debug Message: Creating ships...
Debug Message: Updating ZOC.
Debug Message: Galaxy Create... Done
Debug Message: UIBeginGame called with g_ulLocalPlayerID = 0
Debug Message: UIBeginGameHelper: New Campaign Game Started: Dread Lords Campaign
Debug Message: UIBeginGameHelper: Mods are Disabled
Debug Message: EconomicWnd: Cannot find OBJID Template_Button_Back
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Destroying ship Colony Ship 5. Orbiting: 0
Debug Message: Updating ZOC.
Debug Message: Random Event: End
Debug Message: Destroying ship Colony Ship 8. Orbiting: 0
Debug Message: Updating ZOC.
Debug Message: Random Event: End
Debug Message: First contact: Drengin Scout Ship M0 v1 7 at position 2450.000000,2050.000000 rotation 3.141593
Debug Message: First contact: Drengin Scout Ship M0 v1 7 at position 2450.000000,2050.000000 rotation 3.141593
Debug Message: First contact: Drengin Scout Ship M0 v1 7 at position 2450.000000,2050.000000 rotation 3.141593
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: ForeignRelationsWnd: Cannot find OBJID Foreign_Relations_Destabilize_Slider
Debug Message: ForeignRelationsWnd: Cannot find OBJID Foreign_Relations_Destabilize_Scale
Debug Message: ForeignRelationsWnd: Cannot find OBJID Foreign_Relations_Destabilize_Title
Debug Message: ForeignRelationsWnd: Cannot find OBJID Foreign_Relations_Destabilize_Value
Debug Message: Random Event: End
Debug Message: ***Attacker Terran Alliance has courage bonus 0
***Defender Drengin Empire has courage bonus 0.
Debug Message: Destroying ship Drengin Scout Ship M0 v1 7. Orbiting: 0
Debug Message: No files found matching mask ./Data/English/Campaigns/*.gc2Campaign
Debug Message: Creating Galaxy
Debug Message: Killing threads.
Debug Message: Kiling civs.
Debug Message: Killing ships.
Debug Message: Killing rallypoints.
Debug Message: Killing misc objects.
Debug Message: Killing stars.
Debug Message: Killing anomalies.
Debug Message: Killing asteroid fields.
Debug Message: Killing asteroid field mining bases.
Debug Message: Killing space resources.
Debug Message: Killing ascension crystals.
Debug Message: Killing colonies and planets.
Debug Message: killing scenario.
Debug Message: Clearing Turn Event Log
Debug Message: Clear galaxy settings.
Debug Message: Clear influence.
Debug Message: Clear up laws.
Debug Message: Clear first time events.
Debug Message: Clear wonders and trade goods.
Debug Message: Clear sector mapper.
Debug Message: Loading custom map: C:\Program Files (x86)\Stardock\TotalGaming\GalCiv2/./Data/English/Campaigns/Darkness Rising.gc2map (3 x 3)
Debug Message: Star Frequency: 3 Max Num Stars: 24
Debug Message: Planet Frequency: 3 Max Num Planets: 76
Debug Message: Num Anomalies: 82
Debug Message: WARNING: Could not find specified ship style '0' for civilization: Terran Alliance. Trying default style name: 'Terran Alliance Style'
Debug Message: WARNING: Could not find specified ship style '0' for civilization: Terran Alliance. Trying default style name: 'Terran Alliance Style'
Debug Message: Setting Game Options
Debug Message: Creating Civs
Debug Message: WARNING: Could not find specified ship style '0' for civilization: Terran Alliance. Trying default style name: 'Terran Alliance Style'
Debug Message: Terran Alliance: Intellence -> 48
Debug Message: WARNING: Could not find specified ship style '3' for civilization: Drengin Empire. Trying default style name: 'Drengin Empire Style'
Debug Message: Drengin Empire: Intellence -> 50
Debug Message: WARNING: Could not find specified ship style '4' for civilization: Altarian Republic. Trying default style name: 'Altarian Republic Style'
Debug Message: WARNING: Could not find civilization ship style. Using first style we can find.
Debug Message: Altarian Republic: Intellence -> 33
Debug Message: Creating Civs... Done
Debug Message: Updating ZOC.
Debug Message: Creating ships...
Debug Message: Updating ZOC.
Debug Message: Galaxy Create... Done
Debug Message: UIBeginGame called with g_ulLocalPlayerID = 0
Debug Message: UIBeginGameHelper: New Campaign Game Started: Dread Lords Campaign
Debug Message: UIBeginGameHelper: Mods are Disabled
Debug Message: Random Event: End
Debug Message: ***Creative ability gives civ Altarian Republic tech Xeno Research***
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: Random Event: End
Debug Message: setting size 16 x 0
Debug Message: setting size 16 x 0
Debug Message: setting size 16 x 0
Debug Message: WARNING: CloneFrames failed
Debug Message: Error flipping back buffer to primary buffer.
Debug Message: D3DERR_DEVICELOST
Debug Message: Device lost
Debug Message: Attempting to reset device.