Follow these steps to automatically hide your taskbar.
STEPS :
1) Right click on start button in your taskbar.
2) Select Properties option.
3) Now select the Taskbar tab.
4) Check Auto-hide the taskbar option.
5) Click ok.
The below image is the screenshot of my desktop without the taskbar. If you want to see your taskbar move the mouse pointer to the bottom of your desktop.
STEPS :
1) Right click on start button in your taskbar.
2) Select Properties option.
3) Now select the Taskbar tab.
4) Check Auto-hide the taskbar option.
5) Click ok.
The below image is the screenshot of my desktop without the taskbar. If you want to see your taskbar move the mouse pointer to the bottom of your desktop.