Can't access computer on my network

Jacee said:

Try entering the name of your machine such as Clay-PC or what ever it's name is.

Have tried that with no luck.

myzr7 said:

From looking at the photo buckit snip have you tried, lees as username and no paseword or admin for password?

Just tried those suggestions with no luck.
I have never had to use a password before and have never seen that dialog box until a couple of days ago.

Jacee said:

Check your wife's computer to see if your computer is allowed to access hers. Something may have changed there.

I am not sure what to look for. Any suggestions would be great.

myzr7 said:

Sure you have all the public ticked yes?

Yep sure do.

I checked my wife's computer as Jaycee suggested and found a dialog box with an unchecked square that said something like "Allow all users on the network to access this computer".
I checked it and now I can access all shared folders on her computer again. She says she didn't mess with it so the gremlins must have done it.
Thanks to all for your help.