Can't login all of the sudden

[kendjr2]

I have been using synology and DSM, and everything has been working fine.

I have been using it on one computer for a while, and all of the sudden it is giving me a different "Windows Security" screen when I go to look at the diskstation files. I can see the diskstaion in the network area, however, when I select it I am presented with the "windows Security" window, and it is asking me for a "Network Password" so I can connect to Diskstation.

I believe it has something to do with the domain?, since it has MYPCName\username? It has an area where it says "use another account", but I do not know what the account domain is that it is looking for.

What should be the account? what domain and what password?