fail to load nv module, does not exist

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http://askubuntu.com – my screen went all purple and deformed, cheking this with xdiagnostic the nvidia module did not seem to load, purged it reloaded it and the error was gone. The remaining error was fail to load the nv module does not exist purged that allso and tried to reload a nv-current but none seem to exist, i'm a bit clueless what it does but obvious the system is in need of it. I run Ubuntu 11.10 graphics card is nvidia 520 M. I searched quiet a bit on Ask Ubuntu thats how I found the idea of reinstalling nvidia, but the thing with the nv module seems a bit specific, so if anyone has any ideas please let (HowTos)