I already tried doing this. Genymotion refuses to start with "The Genymotion virtual device could not get an IP address." but nothing happend. And also here Not ab
My VirtualBox Version:5.2.22, after those step ,solved my problem. Hope it helps you too.
Step 1: Find your emulator network adapter
Step 2: Open Global Tools
Step 3: change IP of your device then apply
Step 4: Click DHCP server tab
Step 5: Change Server Address and Address Bounds depending on your Wifi router then apply
Step 6: Start your device from Genymotion
I have had the same issue. Setting->General->Basic and change version 32 bit to 64 bit. Then it worked well.
It's simple!
DONE!!!!!!!!!!!!!!
Somehow this issue is related to my device's memory settings. Here is what I ended up doing to solve this problematic case :
I fixed it by unchecking "Enable EFI (special OSes only)" on virtualbox device settings -> system
What worked for me is by turning on Hardware Virtualization if in any case its already turned on / enable, just turn it off and turn it on back again. Then restart your PC.
cheers