1) Press Control + Alt + End on your keyboard simultaneously. If the combination was successfully pressed you will be presented with the following screen and options:

2) Click on "Change a password..." from the group of options:

3. Your "Domain\Username" or just your "Username" will be pre-filled.  Proceed by entering your "Old password", followed by your "New password".  Enter your new password once more in the "Confirm password" field:

4. Once you have filled out the password reset form, click the arrow to the right of the "Confirm password" field to submit your changes:

5. Provided you have entered your "Old password" correctly, followed by matching your "New password" with "Confirm password" - you will be presented with the following confirmation that your password has successfully been changed: