I'm having the same issue. Game will run fine for a while -- can be anywhere from 10 minutes to 3+ hours -- and out of the blue the game will freeze/white screen and I'll get the "display driver has stopped responding and has recovered" message.
I'm currently running Windows vista 64 bit with 2x 8800 GTS's in SLI configuration. I've tried multitudes of fixes; including the ones listed in this thread:
Applied proper hotfix from Microsoft
Rolled back to older drivers linked here, always using Driver Sweeper in safe mode when uninstalling (noticed a sizable FPS drop with these, about 15-20 FPS)
I've also tried disabling SLI entirely, and beta Nvidia drivers... NOTHING has fixed the problem. The game will still randomly give me the aforementioned error.
It's REALLY getting frustrating now. I appreciate all the community support here, but if anyone has any other suggestions or potential fixes, I'm all ears. I'll give anything a shot.
CoH Helper Data Follows:
---System information gathered by [url=http://home.roadrunner.com/~dasloth/CoH/CoHHelper.html[/url] version 0.1.1.6---
DxDiag gathered at January 9, 2009 01:34 (-07:00)
Operating System: Windows Vista Home Basic (6.0, Build 6001) Service Pack 1 (6001.vistasp1_ldr.081020-1655)
System Manufacturer: NVIDIA
System Model: 132-CK-NF78
BIOS: Phoenix - AwardBIOS v6.00PG
Central Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 4094MB
.Net Memory Report: 2741MB out of 4093MB available
Page File: 6759MB (1627MB currently in use)
C Drive: (ST350032 0AS SCSI Disk Device) 285674MB out of 476929MB (59%) free
D Drive: (HL-DT-ST DVDRAM GH20NS10 SCSI CdRom Device) zero-size drive
Windows directory location: C:\Windows
DirectX: DirectX 10
DirectX Diag version: 6.00.6001.18000 (64-bit version)
Display Notes: No problems found.
Sound Notes: No problems found.
No problems found.
No problems found.
Input Notes: No problems found.
Monitor: Generic PnP Monitor
Monitor's Max Resolution: (blank)
Video Device Name: NVIDIA GeForce 8800 GTS
Manufacturer / Chip: NVIDIA / GeForce 8800 GTS
Video Memory: 2395 MB
Driver Version: 7.15.0011.6925
Driver Date: 12/11/2007 5:06:00 PM
Driver Language: English
Sound Device Description: Speakers (2- Logitech USB Headset)
Driver File: USBAUDIO.sys
Driver Version: 6.00.6001.18000
Driver Date: 01/01/0001 12:00:00 AM
Sound Device Description: Digital Output Device (HDMI) (High Definition Audio Device)
Driver File: HdAudio.sys
Driver Version: 6.00.5840.16387
Driver Date: 11/01/2006 10:28:10 PM
Sound Device Description: Digital Output Device (SPDIF) (High Definition Audio Device)
Driver File: HdAudio.sys
Driver Version: 6.00.5840.16387
Driver Date: 11/01/2006 10:28:10 PM
WMI Information
Motherboard Manufacturer: EVGA
Motherboard Model: (empty)
Motherboard Product: 132-CK-NF78
Motherboard Version: 2
BIOS Manufacturer: Phoenix Technologies, LTD
BIOS Name: Phoenix - AwardBIOS v6.00PG
BIOS Version: Nvidia - 42302e31
BIOS Release: 20080324000000.000000+000
Registry Information for Current User
Resolution: 1920x1200
3D Resolution: 1920x1200 (Not using renderscale)
Full Screen: Yes
Maximized: No
Screen Position: 0, 0
Refresh Rate: 60Hz
Vertical Sync Enabled: Yes
Physics Quality: High
Maximum Particles: 50000
Max Particle Fill? 10.000
Physics Card Enabled: No
Anti-aliasing: 4x
Anisotropic Filtering: 4x
Texture LOD Bias: Smooth
Water Effects: None
Bloom: 0.100 (turned off)
Depth of Field Enabled: Yes
Desaturation Effects (Sepia) Enabled: Yes
Shader Detail: High
World Texture Level: Very High
Character Texture Level: Very High
World Detail Level (Vis_Scale): 1.000
Entity Detail Level: 1.000
Shadows Enabled: Yes
Gamma Correction: 0.946
Geometry Buffers (VBOs) Enabled: Yes
Suppression of Extra Player FX Enabled: No
Suppression of FX When Camera Close Enabled: No
Close Suppression Range: 3.000
Show Advertisements: Yes
Audio Mode: Performance
3D Audio: Yes
FX Sound Volume: 0.128
Music Sound Volume: 0.058
Show Advanced Graphics Options: Yes
Overall Graphics Quality: 0.600
Reverse Mouse Buttons: No
Save Login Username: Yes
Transfer Rate: 135407 bytes/second
Current Game Version: 18.20081105.12T5
Installation Directory: C:\Program Files (x86)\City of Heroes
Mod files in the Data directory
No modifications found