Marco1984

Hi Hervé can please help me? thanks Sent from my iPhone using Tapatalk Pro

Hi Hervé thanks for your answer, I'm using intel iGPU in integrate mode,because nVIDIA doesn't work in my lenovo. What can i do in this case? Thanks Sent from my iPhone using Tapatalk Pro

Hi everyone! I have problem with my Lenovo I can't do login because the screen is black like picture. Can you please help me thanks Sent from my iPhone using Tapatalk Pro

Has anyone successfully installed El Capitan on T420s? Any suggestions on how I might be done. Can someone help me. Thank you Sent from my iPhone using Tapatalk Pro

Hi Jake I tried with El Capitan but I had same problem than Sierra Optimus doesn't work. With dsdt you passed to me brightness and sleep mode doesn't work. Thanks for helping Sent from my iPhone using Tapatalk Pro

Hi does nvidia web driver work with El Capitan? Sent from my iPhone using Tapatalk Pro

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Hi Jake I tried but it's same I think the nvidia is loaded. Sent from my iPhone using Tapatalk Pro

Hi Jake I tried your config. But i get this error. Thanks Sent from my iPhone using Tapatalk

No I tried to check the KP on clover configurator, this pc have nVIDIA NVS 4200M, intel i7 -2640M, GPU=GF119GLM Sent from my iPhone using Tapatalk Pro

I have black screen is going little bit in verbose mode after that the screen goes black like pictures but pc is on. Sent from my iPhone using Tapatalk Pro

Hi Jake I tried to change Kernel but I can't boot from usb Sent from my iPhone using Tapatalk Pro

Yes USB isn't bootable! Kp during installation. Sent from my iPhone using Tapatalk Pro

I just updated Jake but same problem I can't boot from usb to install Sierra. Sent from my iPhone using Tapatalk Pro

Hi Jake I have already installed macOS, but i had problems and I want to install clean install. But the problem is because the screen is all black Sent from my iPhone using Tapatalk Pro

Hi Jake what can i update? I don't know what. I tray to install NullCPU now. Thanks Sent from my iPhone using Tapatalk Pro

Here is my EFI. thanks for your help EFI.zip T420s.htm.zip

Hi Hevre i do that prove but it's same screen Sent from my iPhone using Tapatalk Pro

Hi Jake I followed the guide but I receive all time this error. Sent from my iPhone using Tapatalk

Hi everyone, I'm trying to install sierra but nothing.I have problem with installation,I'm using clover. Please can someone help me thanks. Sent from my iPhone using Tapatalk Pro

Hi Jake I'm trying to repair permissions but i get all time error. About FaceTime I filled the guide but i can't fix iMessage. Thanks

Ho Jake I found Acpi in s/l/e and in kext other and I deleted both but still have problems with brightness. For wifi i use USB adapter and its ok. But please help me with brightness when i go to do reapir permissions and i can not. this is the problem with terminal Screen Shot 2017-08-09 at 17.24.34.zip Terminal.zip

I don't have ACPIBacklighte installed. And about wifi doesn't work command. Jake please how can a fic FaceTime and iMessage I'm trying to fix by self but I can't.

hi Jake i still have problem with brightness and wifi and i attach photo with wifi seting and when i go to repair permisison i have problem i think. thanks. sorry another question is normal now i can login in facetime and imessage those worked before. IO Reg.zip Screen Shot 2017-08-09 at 11.37.54.zip Repair Permission.zip

Hi Jake i still have problem with brightness and Nvidia web driver thanks Screen Shot 2017-08-08 at 23.37.40.zip