I'm not sure I understood what happened. Someone signed on using her account? what makes you think someone has access to her PC? And how is she supposed to get the "device name"?
She created a new account and after 2 days the account was breached, yep someone signed in using her account.
How someone could steal the password without having some access to her PC, the account is recent (3 days ago).
About the device name, when you're signed in and someone else sign in into your account a notifications pops out saying that you're signed in from 2 different places, and the device name is shown (Like SILVERFOX7-PC)
The problem that she didn't catch the name she signed out and went to change the password.
Another thing, in Facebook, you can view all the devices that signed in into your account, i was just wandering if there is such a thing in windows live.
let her change her password from a secure place , like your computer for example ... then get her pc to be formatted , it's very likely she was infected with a backdoor trojan
Her PC was recently formatted.
Is there a way to know if it is infected ?
Or use liveusb linux, it can be called secure place, enough i think.
She is not familiar with linux, thanks for the advice.