My computer developed a terrible loud noise when running. At first I thought it was the fan coming on from the processor working too hard. But when I tracked activity, there was nothing out of the ordinary going on. After a little online research, I learned that the bearings in the fan had failed, and the fan was just making noise. It was so loud using my computer became a real pain.
iFixit got me sorted. A simple walk-through on the repair, which was very easy - a few screws out, and nothing scary at all. Shipping time was fast. The new fan dropped right in. My computer runs silently again. Thanks!
You can do it. Don't be afraid of doing the fix yourself.