I am a student and we switched from Hyper-V (now disabled) to VirtualBox - I've installed it like everyone else in class but I see a critical error everytime I want to start my vm (attachment: "VBox.zip/error.png").
I also sent you the log file ("VBox.zip/VBox.log"), hope that helps.
00:00:05.185545 VMMDev: Guest Log: BIOS: Booting from CD-ROM...
00:00:05.241198 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=000000000a340000 w=640 h=480 bpp=16 cbLine=0x500 flags=0x0 origin=0,0
00:00:15.786762 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0 flags=0x0 origin=0,0
00:00:16.004173 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=000000000a46c000 w=640 h=480 bpp=32 cbLine=0xA00 flags=0x0 origin=0,0
00:00:19.299928 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0 flags=0x0 origin=0,0
00:00:19.353559 Changing the VM state from 'RUNNING' to 'GURU_MEDITATION'
00:00:19.353586 Console: Machine state changed to 'GuruMeditation'
00:00:19.353700 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
00:00:19.353701 !!
00:00:19.353701 !! VCPU0: Guru Meditation 1155 (VINF_EM_TRIPLE_FAULT)
The guest boots from CD-ROM, then crashes. Check that you have a good copy of the ISO?
Also try making the guest in a folder path that doesn't have a comma:
00:00:01.893600 File system of 'C:\Users\Admin\Desktop\HTL 3CHIF, 2019-20\TINF\VirtualBox Installation\ubuntu-14.04.1-server-amd64.iso' (DVD) is ntfs
00:00:01.894758 File system of 'C:\Users\Admin\Desktop\HTL 3CHIF, 2019-20\TINF\VirtualBox\Ubuntu\Snapshots' (snapshots) is unknown
00:00:01.894765 File system of 'C:\Users\Admin\Desktop\HTL 3CHIF, 2019-20\TINF\VirtualBox\Ubuntu\Ubuntu.vhd' is ntfs
