Today, I bought a new game for my Xbox 360 Slim, and I turned on my Xbox to play it. A new system update was available, so I told it to install. After downloading/installing for 30 minutes, I was finally able to play. I played my new game, Spider-man Web of Shadows for about 45, then turned off my system to eat dinner. Afterwards, I went to play again. I turned on the system, and I saw the Xbox logo animation, then the 2 circles loading screen. This went on for about five minutes. I plugged in a wired controller and pushed the guide button. I tried to sign out (as I was signed into my father's account), and the Xbox froze. No button did anything. I pushed the power button. Nothing except the 'powering down' beep happened. I pushed the power button again, and the system shut down. I waited a minute or two and turned the system back on. This time, it froze on the 2 circles loading screen. The circles stopped moving, and I was forced to turn off the system with 2 button presses again. I couldn't reach the dashboard either times to clear the cache.
The system is still freezing. Any help would be greatly appreciated.