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My Mac won’t boot up it makes the noise but just has a grey screen. When i utility boot the system it does not work and when I internet boot to disc utility it won’t allow me to erase the Mac OS X base system! It’s as if I’m locked out. My MacBook is also making a strange loud clicking noise. Please help? Thank you.

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    Any "loud clicking noises" coming from any computer usually mean you have a drive failure (rotational HD or optical drive). This would explain much of what you are describing. Edit your original question to add the model Mac you have. – Steve Chambers Apr 24 at 22:13
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    the Base System is the system that you're using to boot into recovery mode. You cannot delete that. – Ezekiel Elin Apr 25 at 3:05
  • Hi Steve it’s a MacBookPro9 2012. I’m still not having any luck with it unfortunately. Thanks for your reply. – Conor Apr 26 at 23:04
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I agree with Steve Chambers. Your hard drive is likely dying or dead (google "click of death hard drive"). An authorized Apple repair center can swap it out for a new drive (get an SSD, it'll speed your machine up), or you can DIY. I don't know your exact computer model, but the most recent Mac laptops that shipped with spinning hard drives were around 2012, so here is an example of how to replace your hard drive with an SSD (assuming it's a 2012 Macbook Pro, for instance): https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Unibody+Mid+2012+Hard+Drive+Replacement/10378

It's actually quite easy to do yourself if you're careful and order one of the upgrade kits with the appropriate tools (small screwdriver and a T6 torx) along with the SSD.

Good luck! Cheers, -joe

  • it’s a MacBookPro9 2012. I’m still not having any luck with it unfortunately. Thanks for your reply’s. – Conor Apr 26 at 23:05

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