If the retropie console fails to boot or malfunctions, follow the below steps to fix it.
Step 1 - Carefully take out the sd card from the console.
Step 2- Download the latest operating system file from http://www.retrogamingconsole.com/downloads/ and unzip the image file.
Step 3 - Extract the downloaded .zip file to get .img file
Step 5 - Once sd card flashes successfully, insert and secure the sdcard back into the console, Power on and the factory reset console is ready to play!