Can’t boot High Sierra after MultiBeast

[Dissi]

So I was able to install High Sierra on my external Drive and to start the OS. Then, to fix my sound and graphic drivers, I used MultiBeast to install the UEFI Bootloader and the drivers. MultiBeast installed it without any error.

When I try to reboot now, I'm unable to get into the OS. I tried the -v mode, the without cache -f mode, the safe mode ..
But it will just show me the Apple logo / a lot of +++++++++++ and reboot then after a few seconds.

Also the Logo on the external Drive doesnt show an apple logo in the clover boot menu anymore. Just the High Sierra logo, like before of the installation.

My Specs:
CPU: Intel i5 7200U
GPU: Intel HD Graphics HD 620
Mainboard: Intel Kaby Lake-U Premium PCH

 

[RehabMan]

So I was able to install High Sierra on my external Drive and to start the OS. Then, to fix my sound and graphic drivers, I used MultiBeast to install the UEFI Bootloader and the drivers. MultiBeast installed it without any error.

When I try to reboot now, I'm unable to get into the OS. I tried the -v mode, the without cache -f mode, the safe mode ..
But it will just show me the Apple logo / a lot of +++++++++++ and reboot then after a few seconds.

Also the Logo on the external Drive doesnt show an apple logo in the clover boot menu anymore. Just the High Sierra logo, like before of the installation.

My Specs:
CPU: Intel i5 7200U
GPU: Intel HD Graphics HD 620
Mainboard: Intel Kaby Lake-U Premium PCH

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?"