suddenly,no wireless access

suddenly no access to wireless network in our LAN ,my laptop is inside domain.and i am sure i didn't change my password.
what happenned?
remember that you are notified to change the password and you didn't !
just changed the password and it is OK!.

Shift key and mouse click

Many text editors and programs allow you to highlight all or portions of text using the Shift key and the mouse. For example, place the cursor at the beginning of a paragraph, hold down the Shift key and click at the end of the paragraph to highlight the full paragraph.

tip from computerhope.com