[Winpcap-users] npf.sys blue screen

Aaron Ramirez aaron81ramirez at gmail.com
Tue Nov 6 06:30:45 PST 2012

> Hi,
> I was getting an error installing WinPcap, saying that it was already 
> installed, but it wasn't.
> So I followed some advice and deleted "npf.sys" from system32\drivers 
> and now my PC wont start.
> I guess I am going to copy "npf.sys" from a working PC and hope that 
> fixes it, but I cant try it until I leave work.
> Was it really ok to delete npf.sys and should copying the file back 
> over hopefully fix it?
> Thanks,
> Aaron

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