All right, you may be able to navigate with your keyboard and successful reset your resolution, although this may vary.
Once you know Windows has loaded successfully, right click your mouse, this should hopefully right click your desktop. Hit the up arrow on your keyboard and press enter. This should hopefully bring up your properties.
Now, if you have the default theme installed, you should only have to press TAB four times, however, if you have a custom theme installed, you will have to press it five times. This should bring you up to the tabs, in which you can press the right arrow 4 or more times to bring you to the settings tab.
Press tab three times, then press your left arrow multiple times. Then press enter and that should hopefully have gotten it.