Hit MBP started making sound, now it's very slow
So I for some reason hit my mac, not very hard, just right to the trackpad. It started making this weird noise, so I hit it soft, which made the sound go away.
At the time I hit the mac, it was still running. I was afraid it was the harddisk, so I tried open some files, which it did fine. Then I swifted program to watch a movie, an app that had been opened for long time, then my MBP totally froze.
When I started it up again, it took forever to get to the log-in screen. But I was able to log-in. When I log-in everything was so slow. Opened the command window by CMD+Alt+Esc, and it constatly said apps were not responding. Decided to shut my MBP down then. Haven't used it since.
You know what could be the cause for this and how to fix it? Thanks in advance.