Go the the options screen for networking and there should be a box that pops up that allows you to set and add/ remove protocalls, such as Microsoft Client Protocall, IPX, etc... Under all of that there should be a small drop down menu that will be set on I think it is Microsoft Client Networking, so something like that. anyway that is not important.. the other option is. It should be "Windows Logon". Select that and reboot. The only difference now is Windows wont check your network staus and report errors at boot(not important to you).
Note: there are only two different options under this dropdown menu.