Another small lesson

Yesterday was a bit boring. I suddenly remembered that the hard disk was very slow during this time (the old hard disk has been around for 4 or 5 years). I don't know why the hard disk itself is slow software, use Filemon to trace and find that Popo always tries to read cnnis. DLL (Dongdong of the Chinese domain name), I deleted it manually. Of course, it failed, and I deleted all the items that are automatically started. Why should I use this. Check the registry and find that HKLM \ System \ CurrentControlSet \ Services \ Winsock2 \ Parameters \ namespace_catalog5 \ catalog_entries has a 000000000004 subkey. The following information references this and you are not sure to delete it. The problem is that there is no problem with the network connection in use. The new network connection cannot be used. I am a bit confused because I don't understand it.
Restart the machine. The security mode certainly does not work. Is it hard to reinstall the machine? I looked at the Registry item again, and it was very depressing. Under namespace_catalog5, there was a num_catalog_entries item, which clearly recorded the number of subkeys under catalog_entries, changed it to 3, and restarted the machine, OK.
I don't know the psychological effect or what it is, and I found that the network speed is much faster.