I'm trying to connect 2 computers over my network. It worked before when the laptop was using wireless. I decided to connect the laptop to the router because I needed a way to transfer the files, and it was way too on the wireless (2MB/s). I can connect to my laptop to the desktop just fine, but when I try to connect to my laptop from my desktop, I can't get in. It asks me for user and password. When I enter it in, it says its wrong. Any idea how to fix this? My router is the modem that ATT provides: 2wire 3800HGV-B. I'm running Windows 7 on both computers.
Windows 7 can behave oddly if you have both simple sharing and homegroup sharing turned on at the same time. If you are familiar with the simple sharing in XP and vista, it's the same in 7, share per user account, then you can try disabling homegroup and try sharing via simple sharing. To disable homegroup, all computers that are part of the homegroup must be removed from homegroup. After the last computer has been removed from homegroup, it should disable itself.