use a dock or SATA to USB cable) and see if the MacBook boots correctly. One way of partially checking the problem is to externally connect the HDD (e.g. Based in China, supplying and servicing Worldwide.
Once the flashing question mark folder shows up the first time, nothing will boot attached to that cable (attempted with Win10 SSD, macOS HDD, multiple attempts made - the first time this occurred, a cable replacement solved that issue). The cables are quite easy to replace and I keep a few in stock. The one-stop store for Apple Mac & Macbook Replacement spare parts and High-end Advanced Mac Tech. So my question is:Ĭould a different piece of hardware be failing/did I overlook something? If so, what? If not, what are the chances that this new cable failed so soon after install? More importantly, if I exchange it for another used cable, what are the odds it will fail quickly again? It worked!Ībout a week later, the exact same thing happened - a flashing question mark on waking from sleep. I know that HDD cables in these machines fail regularly, so I replaced the cable with a used one I bought from. Macbook pro 2011 hard drive cable replacement full#
I booted to AHT and ran full hardware diagnostics. I pulled the drive and checked it (backed up, SMART status passed, 70+ MBps read/write - pretty good for an old 2.5" spinner). Two weeks ago, a friend's mid-2012 MacBook Pro gave the dreaded question mark folder upon attempting to wake from sleep.
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