How to fix error VirtualBox “Unable to boot – please use a kernel appropriate for your CPU”

After running the virtual system in VirtualBox, I noticed the following error:

This kernel requires the following features not present on the CPU:
pae
Unable to boot – please use a kernel appropriate for your CPU.

The error can be solved in several ways:

Method 1) When you turn on the computer, go into the BIOS and enable the virtualization in the processor settings (if the processor supports it).

Method 2) After opening VirtualBox, we will go into the settings of the virtual system created, namely “Settings” – “System” – “CPU” and put a tick near “Additional Options: Enable PAE/NX“. Click “OK” to save changes.

Done, this error should not be displayed.

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