Virtual box freezing on boot

[Izaak]

My virtualbox machine freezes whenever i try to run any iso i was running ubuntu 18.04 lts and it get stuck on the booting screen and nothing happens for hours i attached my log if anyone can help

[andyp73]

00:00:04.880645 Host RAM: 8139MB (7.9GB) total, 1461MB available
00:00:05.117302   RamSize           <integer> = 0x000000008ac00000 (2 327 838 720, 2 220 MB, 2.1 GB)
00:00:05.117629   VRamSize         <integer> = 0x0000000007b00000 (128 974 848, 123 MB)

You have allocated memory to the guest that you don't have available on the host. Your options are: a) allocate less memory to the guest, b) close some applications on the host, or c) buy some more memory for the host.

00:00:05.117626   VMSVGA3dEnabled  <integer> = 0x0000000000000001 (1)
00:00:05.117627   VMSVGAEnabled    <integer> = 0x0000000000000001 (1)

New Linux guests in VirtualBox 6.0.x are assigned the VMSVGA vGPU. This is relatively new and has a few issues. You will be better off switching to the older VBoxVGA vGPU instead.

00:00:05.118085 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:05.173844 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

VT-x is not available to VirtualBox as Hyper-V (or something that uses Hyper-V is enabled) hence you also seeing the turtle icon in the bottom right corner of the screenshot. If you want VirtualBox to perform well then you need to disable Hyper-V.

-Andy.