I wouldn’t normally associate a very high-pitched whine (as per the OP) with a fan or hard drive.
High pitched noises are usually power related, like a bad LCD monitor inverter or a failing flyback transformer in the PSU.
I wouldn’t normally associate a very high-pitched whine (as per the OP) with a fan or hard drive.
High pitched noises are usually power related, like a bad LCD monitor inverter or a failing flyback transformer in the PSU.