How do I stop pop up connect to server

Question

Using a Macbook Pro Retina with the latest OS, 13inch 2.4 GHz running 10.10.3. Everytime I try to open a folder or the hard disk, I get a pop up asking me to connect to my network server, when I click cancel I get the spinning Beach Ball if away from home. This is no problem at home, I just connect to the server on the Network which is my desktop Mac or let the pop up just stay on the desktop since I cannot cancel it. However, when I am away from home that's impossible and I get the spinning Beach Ball and the machine becomes un-useable.
It goes like this, 1. start machine, open any folder then get a pop up saying, "Enter your name and password for the server "My name and Computer""  Connect as guest or Registered User", it will not allow me to cancel or connect as a guest, I can only connect as the Registered User by entering my password. As I said any other option other than connecting as the Registered User, just keeps bringing up the same Pop up until I enter my password. I have erased the Book once to no avail, and tried disconnecting any applications that could possibly be connected to the desktop, (threw away all music in iTunes and photos in iPhoto, and reset the applications, by creating an empty library in iPhoto, and nothing but an empty iTunes.). By searching the Internet, I see some people have had the same problem, and fixed it in various ways, one seemed to be by using the Terminal, however, none seem to actually address the issue clearly. I am at a loss as to how to proceed, need help..

Answer 1

First off I want to thank you for sticking with me through this, it's nice to have somebody to shoot ideas around with, it made me think up ideas, what I'm trying to say is, by just writing this down in this thread I solved my own problem. Linc I already deleted almost all of the Login items previously, as I did have the same idea, that something in that spot was trying to connect to the desktop through the network, that didn't work, but for some people it could be a problem. When you first mentioned, "make sure that new windows don't open to a folder on the server.", that comment made me look around for any folders connected to the server, then in my last comment I mentioned the word "alias", turns out that was the problem. In my users folder on the Macbook Pro, I had 2 folders that were alias folders, one was the download folder and the other was the Movie folder, I made new folders and put copies of everything into the folders, then threw away the alias folders and renamed the two new folders I created with their original names, presto no more problem.
Must be getting old, cannot remember making any alias folders, but I probably did, probably had some great idea to save hard disk space on the Macbook Pro, only has 250 GB disk, the Mac Pro has over 8 Terebytes of space so I thought I'd use it probably, bad idea, sometimes I get too Geeky for my own good. Again, Thanks Linc for sticking with me on this.
There were interesting ideas on the internet, seems other people have run into similar problems, one suggestion was the terminal to check for any "open processes". link was here, if interested....  http://apple.stackexchange.com/questions/25639/why-is-my-mac-constantly-trying-t o-connect-to-another-server
I'm going to mark your last comment as being helpful, as actually all of it was helpful in forcing me to find those pesky alias folders.