virtualbox.org

Hi! I really hope that you can help me. I have 3 VM`s in my VBox. win2016 (installed by myself and week ago it worked perfect, but something went wrong), win2012 (i imported this vm from ovm file and it works great, without freeze or bugs) and another win2016 (also imported ovm file, which works great on another computers).
So problem is with those win2016 VM`s - they boot very-very slow(I start only onсe at a time), sometimes it can proceed 15 minutes to show lock screen, and when I try to log, there is no response for any input (mouse or keyboard).
My laptot - ThinkBook 14 G3 with 16 gb RAM, 500 gb ssd and AMD Ryzen 7 5700U Processor.
Settings for VM - 4 cores, 8 gb RAM

I tried reinstall VBox and all images, changed directory for VM location, but no changes. VBox log of win2016 VM attached to post. Cold start, and shutdown by closing window with VM.

This forum is my last hope.

UPD
I find out why win2012 works - in processor settings set only 1 core. I changed it also for win2016 and it is working, I can log in system, but it is also slow and I can`t work.

00:00:02.595600 Host RAM: 14158MB (13.8GB) total, 7976MB (7.7GB) available
...
00:00:02.940920 RamSize <integer> = 0x0000000200000000 (8 589 934 592, 8 192 MB, 8.0 GB)
00:00:02.941095 VRamSize <integer> = 0x0000000008000000 (134 217 728, 128 MB)

Starving the host of RAM will not help performance. 2 cores (not 4) is usually the best setting for CPU cores too.
Installing the extension pack on the host and enabling 3D acceleration in the guest is also recommended.

But your main problem is that you are running alongside Hyper-v.

00:00:02.941364 HM: HMR3Init: Attempting fall back to NEM: AMD-V is not available
00:00:02.993175 NEM: info: Found optional import WinHvPlatform.dll!WHvQueryGpaRangeDirtyBitmap.
00:00:02.993247 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

HMR3Init: Attempting fall back to NEM (Hyper-V is active)

Finally it is working!!! Thank you so much! You save my mental health!!!

Thanks for reporting back.