early 2011 macbook pro replacement battery

Please if you can tell me what steps to follow or some guide would be saving me. when I look for if something needs to be updated, “MacBook Pro EFI Firmware Update 2.7” reappears I also did all the possible updates and only the installation of “MacBook Pro EFI Firmware Update 2.7” fails because when the Mac restarts to do the update, it restarts again and again and only continues in safe mode. it always restarts after 30% and starts again.Ĥ In the El Capitan version I uninstalled the drivers for the dedicated video card, hoping that was the problem, but I never got it to boot normally. Currently installing a minor version (mountain Lion) install the first stage, restart and start installing the second stage.Recovery using time machine, since I have a copy of High Sierra, I recovered the complete installation but the behavior is the same.This installation only works failsafe and I cannot start the diagnostic mode (D, cmd + D, option + D) nor the recovery mode (R, command + R) The installation was successful but when the mac tries to start it reboots before finishing the progress bar with the apple at the start. Installation via USB of El Capitan (failure to finish preloading the USB similar to Yosemite) but then I was able to install it with “Clover” and the installable image of El Capitan.Yosemite USB installation (failure to finish preloading the USB, the computer restarts and the installation begins again).I finally bought a used logic board in china and was able to successfully install it as a replacement for the deceased one.ġ The battery or battery charger does not work so the fans run at full speed.Ģ I was able to get it to boot but it does not recognize the SSD.ģ I put the original hard disk (unfortunately it had been used for a windows pc) and tried to install different versions of OS

In the end, it failed again and when I took it to repair it again it did not work again. I have a Macbook Pro from early 2011 and I had problems with the video, I took it to a technician to reball it and it supposedly worked, at the same time it failed again and this time they told me they had changed the video chip.

Early 2011 macbook pro replacement battery