AHicks said:
With a just a bit of DIY'er spirit, that fan can likely be brought back to life with just a few minutes of time and a drop of oil.
Absolute worst case, you totally screw it up and you have to get a new fan.
In either case, you've spent no more than 10 bucks, and your fan is fixed........
Maybe, but I'd expect it to fail again soon afterwards. Easiest and cleanest option is a direct, like-for-like replacement. Next best is to modify the case and add your own fan. In the meantime, you should at the very least use an external fan to cool the case down.
These days one of the few things that I save from discarded electronics is the fan. It's kinda sad, but the sophisticated CPUs, GPUs, and other chips are essentially worthless while the electro-mechanical fans are actually worth a few bucks and generally worth setting aside for future repairs.