If you don’t know how to do it, see the instructions above.
In simple, go to your computer’s boot menu or BIOS or UEFI, look out for one of the virtualization options named above and enable it with the arrow and enter keys. To enable it, if you have an Intel-based CPU, you’ll probably have an Intel VT-x, Intel Virtualization Technology, Virtualization extensions or something similar option to it in your BIOS or UEFI Firmware. By default, it is not enabled on Intel systems which may be the reason for the problem. The VT- x or virtualization options integrated into BIOS or UEFI settings is a superb feature which accelerates and enhances virtualization. Turn on Virtualization options (VT-x) on BIOS or UEFI Firmware Fix Display, Screen Resolution, USB Connecting & Other Problems on VirtualBox.Fix macOS Mojave Boot & Technical Problems on VirtualBox.Fix Display, Screen Resolution, USB Connecting & Other Problems on VMware.Fix macOS Mojave Boot & Technical Problems on VMware.Fix macOS Mojave Issues from Q/A Solutions.Turn on Virtualization options (VT-x) on BIOS or UEFI Firmware.