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


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

Things I've done since installing Windows:
Install Firefox
Install Chrome
Install GeForce 290.36 (beta) driver
System Restore
Install Steam
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

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,
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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