You can execute this command to check requirements for running Intel Hardware Accelerated Execution Manager (HAXM):

C:\Program Files\Intel\HAXM\checktool.exe

If everything is OK you should see:

CPU vendor          *  GenuineIntel
Intel64 supported   *  Yes
VMX supported       *  Yes
VMX enabled         *  Yes
EPT supported       *  Yes
NX supported        *  Yes
NX enabled          *  Yes
Hyper-V disabled    *  Yes
OS version          *  Windows 10.0.19045
OS architecture     *  x86_64
Guest unoccupied    *  Yes. 0 guest(s)

I had to execute this command to disable Hyper-V:

bcdedit /set hypervisorlaunchtype off