Acer zg5 problem with loading windows.

Hello, When i turn on my acer, it brings me to a screen that says "we apologize for this inconvenience, but windows did not start successfully". It then gives me 5 options such as safe mode, safe mode with Networking, safe mode with command promt, last know good configuration, start windows normally. All of these options attempt to load windows but just bring me back to the same screen with the options. PLEASSEEE HELP MEE!