“this is not a microsoft account” .

is the message I get when I try to access anything, skydrive, et.  I originally used the Gmail account however to set up my computer and the gmail address shows up when I sign on and I swipe my finger. I don't know the password, now and when I try to reset the password, I get the message, not a microsoft account. I have a msn account that I also use but it is not the main account and I have very limited access to programs. help!