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<blockquote data-quote="MacInWin" data-source="post: 1944882" data-attributes="member: 396914">OK, Sierra (10.12) did introduce APFS, but was, as I recall, optional in that you could still have HFS+ (It's been a long time since then). High Sierra (10.13) was APFS and only APFS for boot drives. El Cap (10.11) did not know anything about APFS. So, when you installed El Cap, you must have reformatted the drive to be HFS+ as that was all El Cap supported. Because the MBA originally had 10.12 on it, it was probably APFS format.From what I can find, it's about the same as HD life expectancy. Average 5 years, some longer, some not. So a 7 year old SSD could be failing and need replacement.That would seem to point to a problem with the I/O circuitry in the MBA.&nbsp; You might check at ifixit.com for your exact model to see if they have instructions and if you think you can do it yourself. Any parts you need you might be able to get from them, otherwise it's going to be an internet search for you to find someone with the parts.I looked at ifixit, and this MAY be the instructions to replace the I/O board:[URL unfurl=&quot;true&quot;]https://www.ifixit.com/Guide/MacBook+Air+13-Inch+Early+2017+I-O+Board+Replacement/135933[/URL]If that is your system, it doesn't look that hard. It may or may not fix the charging issue, and won't fix the SSD issues, so it's definitely buyer beware so as not to open a money pit on an old system.</blockquote>

[QUOTE="MacInWin, post: 1944882, member: 396914"] OK, Sierra (10.12) did introduce APFS, but was, as I recall, optional in that you could still have HFS+ (It's been a long time since then). High Sierra (10.13) was APFS and only APFS for boot drives. El Cap (10.11) did not know anything about APFS. So, when you installed El Cap, you must have reformatted the drive to be HFS+ as that was all El Cap supported. Because the MBA originally had 10.12 on it, it was probably APFS format. From what I can find, it's about the same as HD life expectancy. Average 5 years, some longer, some not. So a 7 year old SSD could be failing and need replacement. That would seem to point to a problem with the I/O circuitry in the MBA. You might check at ifixit.com for your exact model to see if they have instructions and if you think you can do it yourself. Any parts you need you might be able to get from them, otherwise it's going to be an internet search for you to find someone with the parts. I looked at ifixit, and this MAY be the instructions to replace the I/O board: [URL unfurl="true"]https://www.ifixit.com/Guide/MacBook+Air+13-Inch+Early+2017+I-O+Board+Replacement/135933[/URL] If that is your system, it doesn't look that hard. It may or may not fix the charging issue, and won't fix the SSD issues, so it's definitely buyer beware so as not to open a money pit on an old system. [/QUOTE]

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