Can't use VM VirtualBox "VT-x is disabled in the BIOS for all CPU modes"

I can't use VirtualBox. When I tried to create a ubuntu in it, after powering the virtual box on it gives this as output. Failed to open a session for the virtual machine Ubuntu GNOME.

VT-x is disabled in the BIOS for all CPU modes (VERR_VMX_MSR_ALL_VMX_DISABLED).

Result Code: NS_ERROR_FAILURE (0x80004005) Component: ConsoleWrap Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

Please help me fix this.

First you have to make sure that your cpu supports VT-x aka virtualization.

Go to intel's website and and type your cpu's name and find the specifications and see if VT-x is supported by your cpu.

If is supported enter your bios and search for a option named VT-x virtualization or intel virtualization or just virtualization and enable that and try again virtualbox.

If your cpu supports intel's VT-d known simply as KVM there is a high chance that you missing a huge privilege, for details please see HERE.