virtualbox.org

Hi, I used to have multiple windows VM and never had any probleme but since a few days its impossible for me to start any windows machine.
I still can start Linux machine with no probleme but when i try to launch a windows 10 machine I get the launch sequence (with the little dot turning) then i get a black screen with some white line
I tink it happend when I try to install docker on my host machine but I have uninstall it and still got probleme.

I really dont know what to do anymore if anyone got idea...

Thanks in advance for any help you can provide.

Provide a VM log file. Make sure the VM is fully shut down, then right click it in the manager UI. Select "Show Log" and save "VBox.log" (no other file) to a zip file. Attach the zip here.

Here it is

00:00:03.854870 HM: HMR3Init: Attempting fall back to NEM: VT-x is not available
00:00:03.911023 NEM: WHvCapabilityCodeHypervisorPresent is TRUE, so this might work...

You have Hyper-v enabled. See HMR3Init: Attempting fall back to NEM (Hyper-V is active)

You have also over-committed processor cores and are in danger of doing the same with RAM. I would reduce cores to 2 and reduce RAM allocation to 3072MB. If you want to run two instances of Win10-64bit on the same PC then 8GB RAM runs out quickly - perhaps consider doubling RAM on this host.

I would then disable transparency effects in the Windows guest, upgrade the Guest Additions (from the 6.0.14 GAs you currently have), and finally enable 2D and 3D acceleration.

Oh I really dont know how to thank you enough its working again.
I hope you have an long and wonderfull life.

I'm glad you got it working. Thanks for reporting back.