PC Doesn't See / Won't Connect to others on Network

Currently I have my main desktop PC, an HTPC hooked up the the tv in the living room, and I just finished building an unRaid server (a linux based server platform) to store all of my media files.

My HTPC (running windows 7 home premium) sees everything fine. It can connect to the server as well as my desktop PC. The same is true with my laptop (macbook pro) and my girlfriend's iMac

My desktop, however, doesn't want to play nice with the network. It sees my HTPC, but when I try to connect to it I get a "Windows Security" prompt that, despite entering the password to my HTPC, won't allow me to connect to it (says "Login failure: unknown user name or bad password" )

My desktop doesn't even see the server. It did briefly last night, but whenever I tried to open it I got an error code of 0x80070035 "Check the spelling of the name. Otherwise, there might be a problem with your network." I was getting the same error message this morning when trying to connect to the HTPC, but then I did something (I don't really know what to be honest), and now I'm getting the windows security prompt.

Everything is connected to the same workgroup. I've disable firewall and AV on the two windows machines. Networking stuff is really not my forte, and I don't even know where to go from here.

Thoughts?

PM me

sent.
Might want to remove your email now.

How did you make out?

Got everything fixed...there was an issue with my LAN settings (Node type and Netbios over TCPIP) that, once set to the right things (Node type = hybrid, enable Netbios over TCPIP) connecting to the server went fine.

Connecting to the HTPC was just a matter of allowing the HTPC to share files (I had set it up on my desktop but no on the HTPC). So everything is working great now

thanks again for the recommendation

Ya, he knows his stuff.