When start android emulator with windows10 a have this problem:
PANIC: HOME is defined but could not find avd-nome_avd_test.ini file in $HOME\.android\avd
To solve, we have to add an enviromental variable:
Go to control panel -> system -> advanced parameters -> environment variables. In the “system variables” block, Click on “new”, fill the variable name and it’s value:
Close all dialog by clickin on button “OK” and launch emulator again.
I hope this help you.