pifia

I had these issues on two occasions for 13” Macbook Pros from 2012. After hours of reinstalling and re-corrupting the MacOS on a new SSD I was installing, I ordered a new SATA cable. The most recent time, the new cable did not fix the problem. I then read about SSDs not tolerating erroneous data sent along SATA cables very well, with the suggestion that the cable would produce data errors because of it rubbing against the aluminum case. The instruction was to insulated the cable from rubbing against the aluminum case by putting a few strips of electrical tape beneath the cable, on the case where the flat SATA cables run. I did that and then suddenly the new cable worked, and no more corruption of my installations. I never did throw the old cable back in to test if the tape was a singular fix (I was just happy to see the SSD show up in Recovery again), but I sure kept the potentially-fine cable for a future fix. TL;DR - Make sure you put an insulated barrier between the aluminum surface and your SATA cable;...

I am having a similar problem with my 13” 2009 MacBook (white, unibody, A1342). Just last week it seemed like the charger top was having problems connecting, got it to work for a few minutes, and then suddenly it stopped working at all; (nothing on screen, no fans, no lights of any color on charger tip of computer). So far I have tried: -SMC reset, NVRAM reset -move MagSafe charger port back out to just-behind case -disconnect battery and SSD -confirmed this model is to use 60W charger -change charger to a newer one, with pins not pushed as far in So changing the charger PLUS doing the SMC reset specifically as victorclausson suggested gets the computer to boot, so long as the battery is disconnected. During the process of figuring this out, the screen displayed some very strange patterns on boot, the inside side of the MagSafe port area was sparking one time, and every time I get it to start up then the fan runs at a very high speed. I am able to run Hardware Test, with no errors detected. In Terminial I...

Be very careful when putting the Torx screws back as they are very easy to leverage and seems to bend the white piece at some point, making me nervous they could crack it. Don't overdo these.

The left-most philips screw in this picture does not seem to go in properly. The best I could do was use the screw with least of the blue screwlock on it and then err on the side of leaving the white plastic a bit Ioose in that location.

I did this on a 2009 white unibody Macbook with a caddy that fit well, but I couldn’t get the second hard drive to show up in Finder, DiskUtility, or with ‘diskutil list’ in Terminal. System Report’s SATA Device Tree does show two SATA connections possible, so it seems like all is good up until the connector.

The previous optical drive was '“broken” according to the owner of the computer, which I presumed was just classic optical drive breakage, but perhaps it is down to the connector between the two?

Any other guesses what might be wrong?

But apple is not gonna do the repair beyond the warranty, so I don't believe it's a consolation that apple would do that repair when I buy computers to last me a decade. You seem even a bit optimistic about this.

This guides information does NOT apply to Redmi Note 4 GLOBAL. I have the global and it looks different inside.