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Apple Computing Products:
macOS - Notebook Hardware
Macbook Pro not booting nor installing osx
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<blockquote data-quote="techiesteve" data-source="post: 1672719" data-attributes="member: 98520"><p>When a Mac boots and just before you would expect the login screen to appear it switches off, this is usually caused by a failed hard drive or corrupt OS.</p><p></p><p>When you mention a loading bar, is this the normal thin Yosemite bar, or a fatter bar with rounded ends? If the later that would normally indicate a failing hard drive.</p><p></p><p>If a newer Mac where the EFI password couldn't be cleared by a simple procedure, then if using a non standard way of removing the EFI password you can never predict what that hack has done. The recommended approach would have been visiting an ARS or AASP with your proof of ownership. A long hex code is then generated, this is uploaded to Apple support who generate a bootable file that is copied to a USB memory stick, this is then booted and clears the EFI password leaving you a blank hard drive. Any other process is unpredictable.</p><p></p><p>Was the MacBook Pro working for your friend, if not what fault did he/she tell you it had? Was it the fault you now describe?</p></blockquote><p></p>
[QUOTE="techiesteve, post: 1672719, member: 98520"] When a Mac boots and just before you would expect the login screen to appear it switches off, this is usually caused by a failed hard drive or corrupt OS. When you mention a loading bar, is this the normal thin Yosemite bar, or a fatter bar with rounded ends? If the later that would normally indicate a failing hard drive. If a newer Mac where the EFI password couldn't be cleared by a simple procedure, then if using a non standard way of removing the EFI password you can never predict what that hack has done. The recommended approach would have been visiting an ARS or AASP with your proof of ownership. A long hex code is then generated, this is uploaded to Apple support who generate a bootable file that is copied to a USB memory stick, this is then booted and clears the EFI password leaving you a blank hard drive. Any other process is unpredictable. Was the MacBook Pro working for your friend, if not what fault did he/she tell you it had? Was it the fault you now describe? [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Macbook Pro not booting nor installing osx
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