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Can't install/uninstall Nvidia drivers

When I tried to upgrade my Nvidia drivers from 314.22 to 320.18 my pc crashed. When I followd an online guide to fix this problem, it told me to remove the drivers from "Device manenger", which turned out to be a bad idea. Because of that my driver installation seems to be locked: I can't install new ones (Windows crashes with a BSOD for SYSTEM_THREAD_EXEPTION_NOT_HANDLED or IRQL_NOT_LESS_OR_EQUAL) and I can't uninstall the old ones through "Programs and Features", which fixed my previous driver update problems. System recovery didn't help, nor did ccleaner or driver sweeper. I tried Memtest 86+, but it tells me there isn't a problem. I also tried to disable my Intel 4000 Graphics and uninstalling it's driver, but it also didn't help.
I also can't enter my Nvidia-configuration panel anymore.

All help is apreciated!

System specs:
Motherboard: Gigabyte GA-Z77X-UD5H
CPU: Intel Core i5 3570K (stock speed)
Graphics: Msi GTX660 ti Power Edition OC
RAM: Corsair Vengeance LP 2x4GB DDR3-1600
Sound: Asus Xonar DG
Network: Asus PCE-N15
SSD: Crucial M4 128GB
HDD: 2x Western Digital Caviar Black 1TB in RAID1
PSU: Corsair GS800
Cooling: Corsair H100i
Other: LG DVD-burner (don't remember the type)
OS: Windows 8 64-bit
2 answers Last reply Best Answer
More about install uninstall nvidia drivers
  1. Best answer
    Boot using F8 "Safe Mode".

    1. Uninstall drivers as normal
    2. Run registry editor to remove all things nVidia
    3. Reboot to safe mode
    4. Install new drivers
  2. Thanks for the (fast) help! I didn't even realize the solution was that easy.
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