I've had my Macbook laptop for almost four years now. A few months ago it started having a huge noise with the fan, so I bought one and replaced it recently. I thought this would fix the large jumps in CPU usage and fan speeds (5-6k rpm) just when I'm watching a YouTube video.
But, of course this didn't fix it. Now, it still has same symptoms as before: when I even watch a show the fan is at 6krpm, processor is at like 90% usage. But, to make things even better, now the laptop is just shutting off when the rpm/processor gets cranked up. This happens a lot now, because I'll have Photoshop, Lastfm, Chrome, and TextWrangler open and then all of a sudden it's just too much.
I'm using Chrome. This shouldn't be happening.
Is my processor bad? Did I install the fan wrong?