VT-x is not available

[larbakium]

Hello,
I am getting the error message bellow with all VM's I try to start.
I have checked my BIOS settings and Virtualisation is enabled.
I did not change any settings on my vbox configuration neither on the VM itself. I notices that if I navigate to the VM settings, "Acceleration" is disabled. It does look like vbox is not able to recognize the capability is enabled.

What changed in my system?
Recently, and likely to be related, my computer OS has been upgraded from W10 build to the latest. I am not sure why or how, but I am thinking this can be related.

Any ideas on how to troubleshoot this to at least find the logic behind it?
Message:
Failed to open a session for the virtual machine W10.
VT-x is not available (VERR_VMX_NO_VMX).
Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Thank you

[mpack]

There is a very similar discussion already under way. I suggest that you peek in on that.
viewtopic.php?f=6&t=85123