I bought a Macbook on September, the better choice of white. Yesterday I started noticing that my Macbook was working in small outbursts. I would write something, but it would take 10 seconds for it to appear on the screen. When I scrolled it stopped responding, working only after another while. The hd (or at least I suppose it is the hd) is making a noise, not a clicking noise but a noise as if it were working, but always the same sequence. When I turn on the computer it will work fine for a few moments, no noise, but then I open the finder and after a few minutes the noise starts and I can't do anything anymore, and I have to force shut down. Whenever I try to copy files to my external hd it crashes, when I right click the Finder it freezes and I can't relaunch it. Whenever I can, it never comes up again, it's just the screensaver forever. I managed to copy a few files when it was freshly booted, with the absence of the noise; when I was copying the files the noise started, so I cancelled the copying. About half of them were copied, and when I tried to copy the other half, everything froze. I manage to keep it running with the monitor open, and I see a kernel_task that is fluctuating CPU use from .8 up to 2-4. Tried to Inspect it, but the computer crashed.