Hp elitebook 8540w

Good Afternoon
i have a grafic problem at loading of Yosemite on this machine, mac os x works great but at the loading, when appears the apple's logo doesen't appear the charging bar, video card is nvidia quadro fx 880 and bootloader is clover.
Thanks for helps

Ripartogalahad said:

Good Afternoon
i have a grafic problem at loading of Yosemite on this machine, mac os x works great but at the loading, when appears the apple's logo doesen't appear the charging bar, video card is nvidia quadro fx 880 and bootloader is clover.
Thanks for helps

Click to expand...

Follow the Clover guide linked from the FAQ.
http://www.tonymacx86.com/el-capita...faq-read-first-laptop-frequent-questions.html

Although you should read the FAQ for an overview of issues, the Clover guide is linked from the first question: "Q. Where do I start?", just after the bold face "Clover Guide".
Here is a direct link, just to be clear:
https://www.tonymacx86.com/threads/guide-booting-the-os-x-installer-on-laptops-with-clover.148093/

Also, your profile must be filled out with complete details as requested in the FAQ, again under "Q. Where do I start?". All seven details requested are equally important.

And if you have an issue (after following the guide), or on any other problem, you must provide a detailed description of the problem including information that helps us understand what you're doing. Always attach "Problem Reporting" files as per FAQ.
http://www.tonymacx86.com/el-capita...faq-read-first-laptop-frequent-questions.html
The required files and data are fully detailed in the last question in the FAQ:
"Q. What are typical "Problem Reporting" files?"