My Linkstation has been working well for about a year but over recent weeks, I have had difficulty linking to it when my main PC reboots. Previously I could access the Linkstation as soon as the PC started but now I am challenged for a userid and password. When I use the admin userid and password it is not recognised although I am using correct values. I have to start NAS navigator manually and put the userid and password in and then it magically starts working. Any suggestions as ths is pretty inconvenient.