Oros

La référence de la carte mère c’est: Mac Pro Late 2013 APPLE PART # 661-7527 Mac Pro (Late 2013)  ME253LL/A (Quad-Core) MD878LL/A (6-Core)  A1481 malheureusement je connais pas les processeurs compatibles

Other solution would be to remove the back plate of your Macbook and remove the SSD. On ebay or even Amazon you can find adapters from your SSD to usb so you can connect you drive tu other Mac and recover your data.

Hope I understood you corectly A Macbook Pro 2012 with a High Sierra install can run a lower MacOS hard drive but a Macbook Pro 2011 cannot see a High Sierra formated (APFS) drive

It could be a faulty battery (it happens) since the old one is charging fine. Get in touch with iFixit Support for a warranty replacement of your battery.

Is the new charger a new Apple charger or a generic one? When you say is charging you say that because the orange light on the charger? Try a SMC reset Shut down your Mac. On your built-in keyboard, press and hold all of the following keys. Your Mac might turn on. Control on the left side of your keyboard Option (Alt) on the left side of your keyboard Shift on the right side of your keyboard Keep holding all three keys for 7 seconds, then press and hold the power button as well. If your Mac is on, it will turn off as you hold the keys. Keep holding all four keys for another 7 seconds, then release them. Wait a few seconds, then press the power button to turn on your Mac. (Apple procedure) Try and see if you get an image on an external monitor via HDMI port

which type of frequency your wifi works on? 2.4 or 5 ghz? If your router is syncing the two then there might be your problem (you should change the setting of your router to get out 2 ssid one for the 2,4 and one for the 5ghz and then you try to connect on one or the other to see which one works

Vu que les symptômes sont les memes meme avec un nouveau bouton le prochain element a tester sera l'écran car la communication entre le bouton Home et la carte mere passe via l'écran. Tout ca en supposent que la panne est survenu sans un motif apparent comme renversement de liquide ou autres facteurs exterieurs.

ensure that Sounds are enabled in notifications settings

Pour savoir si la problème vient de la carte mere ou de la batterie d’abord il faut tester avec une batterie 100% fonctionnelle . Dans le cas ou meme avec une autre batterie les symptômes sont les memes il faut tester si la carte mere comunique avec la batterie (lignes SDA/SCL au niveau de connecteur batt). T’as des outils pour faire des mesures sur la carte mere (multimetre, schemas pour cette carte mere)? Edit avec photos pour faire des mesures avec batterie connectée sur le connecteur que @luk812 a encerclée

On the left you have the R7753 0 Ohm, 5% 1/20W 0201 On the right you have the R7731 200kohm 1% 1/20W 0201 Both on the backlight circuit

If you use the Trancend replacement ssd ( https://amzn.to/2OkTZhj ) it comes with an adapter where you can slide the old ssd (is a bit more expensive with the adapter ( or you can find a cheaper one on eBay)

OWC has the same adapter but I see that is not sold on the iFixit store

You need the recommended one for the lid an a torx T5 for the screws inside

Rob Benton - Better be safe that sorry. Always disconnect the battery.

Here you have one http://amzn.to/2vtkPMp