Hi,

I was able to access a PC which is connected to my current laptop on LAN in "full mode", it means I could go to C:\ disk there by entering \\192.168.1.3\C$

But some day ago, I reinstalled that PC and now can't access it's disk C:\ like that. When I do so, a dialog appears to ask password for a fixed user: Guest. (the user box is disable, can't change). So no password is accepted.

And then I login to that PC, run command gpedit.msc, [Computer Configuration] -> [Windows Settings] -> [Security Settings] -> [Local Policies] -> [Security Options], edit item "Network access: Sharing and security model for local accounts" to "Classic - local users authenticate as themselves". This time, a dialog with user name and password editable. But no matches at all.

What's wrong with that sharing? Please tell me how to access that PC like before?

Thanks in advance! 

[Computer Configuration] -> [Windows Settings] -> [Security Settings] -> [Local Policies] -> [Security Options], edit item "Network access: Sharing and security model for local accounts" to "Classic - local users authenticate as themselves"