Illegal operation in NVDISP uninstalling NVIDIA 81.98 drivers \ VOGONS

Illegal operation in NVDISP uninstalling NVIDIA 81.98 drivers

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First post, by keenerb

Posted on 2022-05-16, 20:25

keenerb Offline

Rank Oldbie

Rank: Oldbie
Posts: 1069
Joined: 2006-11-13, 16:24

I'm trying to roll back to an older version of Nvidia drivers to fix the restart in msdos mode problem that is apparantly an nvidia issue.

I receive the error in the title every time I attempt to uninstall.

Even in safe mode it fails.

Any suggestions on how to get these nvidia drivers purged?

Reply 1 of 2, by keenerb

Posted on 2022-05-17, 03:23

keenerb Offline

Rank Oldbie

Rank: Oldbie
Posts: 1069
Joined: 2006-11-13, 16:24

I found a differently sized nvudisp.exe in a system folder. I replaced the "crashing" nvudisp.exe with it, and uninstall proceeded successfully.

Reply 2 of 2, by pixel_workbench

Posted on 2022-05-18, 01:44

pixel_workbench Offline

Rank Member

Rank: Member
Posts: 216
Joined: 2019-01-23, 16:07

As you found out, this problem is caused by a buggy nvudisp.exe from the driver package. If you replace the buggy one with the version from 77.72 or earlier driver, that should fix it.
Another solution is to force install 77.72 drivers on top of the existing newer one, and then uninstall it.

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