Getting \\NAS-05-7A-F1 is not accessible error

There are a couple of things to check on the ASUS first

1- check that the network connection is "private"

2- check that the Asus workgroup (not the homegroup) is set to the same workgroup of the NAS.

3-check that you can log into the NAS admin page from the new laptop.

There is one thing to check on the duo - and that is whether you are in "share security mode" or "user security mode". If the NAS is in share security mode, you should switch it to user security mode. Here's a guide on switching to user security mode: http://readynas.sphardy.com/2010/09/how-to-migrate-to-user-security-mode_4917.html

Note that if you don't have a "security mode" choice when you click on the security menu option in Frontview, then you are already using "user security mode".

After that's done, if you still have the problem try this test:

Open CMD from the windows bar and enter

net use * /delete

net use t: \\NAS-05-7A-F1\C /user:admin nas-admin-password

Use the real nas admin password.  These commands are fussy, so make the slashes are in the right directions and spaces are in the right places.

The first command just closes any existing file-sharing sessions (and there might not be any).  The second attempt to mount the C volume of the NAS as drive letter T: on your PC.

If the second command fails, try both commands again, but use the IP address of the NAS instead of NAS-05-7A-F1

If these commands work, then what you need to do is open the windows credential manager on the ASUS.  You'll delete any existing credentials for the NAS (again there might not be any), and create a new credential that includes the username/password of a user account on the NAS. If you don't have any, then you can use "admin".