Black Screen with Itunes

[prabs99]

I know there is a guide for my laptop (HP Elitebook 840 G1 - Haswell) , and I have followed it to a T. The only thing that doesnt work is the movies on Itunes. I read through the forums, but cant find what I am doing wrong. I am attaching troubleshooting files. Hope someone can help. Thanks in advance.

 

[favoriti]

you could try adding WEG boot args : shikigva=1 or shikigva=57
Btw make sure you need the kext-dev-mode=1 arg

 

[prabs99]

you could try adding WEG boot args : shikigva=1 or shikigva=57
Btw make sure you need the kext-dev-mode=1 arg

Thank you. But ,neither setting helped.