Pop Up while listening to iTunes

Question

While playing itunes a pop up arrives every time the song changes?  I have no clue. 

Answer 1

It sounds like your hard drive might be busted. That "?" you get means it can't detect the boot files it needs. The clicking noise you're getting is this "arm" piece that moves back and forth the radius of the drive as it spins to process data. But you also have an intel-based mac and there are some parts that need to be reset. The SMC manages the power in the system and the PRAM stores settings. They're very easy to reset yourself and it requires no tools. If those don't work, hold in command and r at the same time as soon as you turn it on. You'll boot into recovery mode and from there, select disk utility. Select "Macintosh HD" and look at the bottom of the window. It should look something like this
It should show how much storage (capacity) your hard drive has and how much is open (available). It should also say "/" for Mount Point. If it doesn't indicate any of these, your hard drive most likely failed. I would take it to apple just to diagnose the issue. If it's the hard drive, you should be able to replace it yourself, just make sure it's compatible with your model. I would suggest getting an SSD from www.crucialmemory.com. They're faster and stronger, making them more reliable since SSD stand for Solid State Drive so it has no moving parts.