Blue screen ntdll.dll error on startup after installing NVIDIA drivers

Hi,

I've had this blue screen error come up on the startup of my new Windows 7 64-bit install:

STOP: C0000221 Unknown Hard Error
\SystemRoot\System32\ntdll.dll

Things I've done since installing Windows:
Install Firefox
Install Chrome
Install GeForce 290.36 (beta) driver
Crash
System Restore
Install Steam
Crash
Boot successfully after taking a RAM stick out - seems to have removed steam.exe and GeForce driver
Test both sticks in both slots on their own - successfully boot each time
Install GeForce 285.62 Driver
Crash

I've been looking around and haven't been able to find any solid leads on what's going wrong.

Here's my (basic) system specs:

AMD Phenom II X2 3.2GHz
EVGA GeForce GT 520 1GB
Biostar A880GU3 Micro ATX Motherboard
2x2GB Corsair DDR3 1333 Model VS2GB1333D3
Western Digital Caviar Blue 320GB
HEC Mini Tower w 585W Power Supply

Thanks for any help,
Paul
1 answer Last reply
More about blue screen ntdll error startup installing nvidia drivers
  1. Go into safe mode and remove the nvidia driver. Then boot back into windows and install a new driver (not the 285.62 version) for your video card.
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