My mother has a Surface Tablet and she also uses a desktop to work on business matters. She wants to be able to access and change the same files from both devices, but if we use homegroup, the desktop has to be on in order for homegroup to work. I have a Linksys e3000 router that has the ability of plugging in storage devices to it to work as a network drive. we bought a 64GB flash drive to work as a network drive and plugged it into the USB port on the back of the router. I went into the router settings by inputting the IP in Google Chrome and made a shared folder of the drive through the router. In order for the network drive to work, it needs to be mapped on the desktop. In trying to map the drive however I encounter a window that asks for a username and password, and I don't know what it wants me to input. The "folder" I browse to map is the IP address of the router but after typing in "\\192.168.1.1\", hitting browse and selecting the IP, a prompt by "Windows Security" comes up asking me to put in the username and password for the IP address. The default "domain" is the name of the desktop. But no matter what I try, different domains (IP, router name, computer name), different usernames (admin, computer user name), and different passwords (user password, router password) it continues to show a logon error. I tried contacting microsoft about it and I tried a few things, and in order for them to basically do anything (like override the error), I'd have to pay because I already tried everything they told me to try. The reason I input the IP in the browse search is because that was under the instructions of the router website tutorial and the router or drive do not show up if I simply hit browse without inputting anything. But the router website is very vague of the username and password, saying "If you have set up specific shares to users, you will be asked to log in using your Username and Password." I have windows 7 Ultimate, if you guys can help me that'd be awesome, I don't want to have bought the drive for nothing, and if more clarification is needed, I can answer.