Lanz Bullshit Forum » GUI Problem under Windows 10 since system change

Hello,

I´m using Virtualbox 5.2.6 but right now i have a problem where i don´t know ho to fix it. I´m using Virtualbox for evaluating network installation of software using group policies in our schools so i replaced my HP z400.I really thought that would be a great solution for the memory problems i had with my old z400 with "only" 16GB of RAM, but now i have a for me completly new problem: After installation the Virtualbox guest additions the screens of my Win 8.1 and Win10 VMs become black, i can´t see whats going on. Because of enabled RDP support in the guest OS installtions i´m able to shut them clean down, but after every boot the problem is still there. Maybe also an important help: Windows XP and Windows 7 don´t have the problem!

Please help.

I didn't find the right solution from the Internet.

References:-
https://forums.virtualbox.org/viewtopic.php?f=2&t=86494
Cryptocurrency Video Example

Thanks