How to restore nvidia kernel module?

[Alex Luya]

I try to enable Nvidia accelerate graphic  driver(version 180)(System->Administration->Hardware Driver),when 
rebooting,an error comes up:
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Failed to initialize nvidia kernel module.
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I remember I have downloaded newer driver:NVIDIA-Linux-x86-180.51.pkg1.run 
<http://us.download.nvidia.com/XFree86/Linux-x86/180.51/NVIDIA-Linux-x86-180.51-pkg1.run> 
from http://www.nvidia.com/object/linux_display_ia32_180.51.html,and ,but failed,during that 
installation,it prompted me to confirm new kernel,I confirmed,I think 
that is the problem:complied kernel module is newer and not appropriate for  
version 180, So how can I restore older nvidia kernel module for 
version 180.Thank you.