@zefolhadela Nintendo 64 is hit and miss on a Pi 3. A proper power supply might help somewhat, but really picking the right emulators for each game will be the way forward if you want to increase performance.
i managed to come right and thought i would share my findings
in this situation the device needs a n on off toggle switch
i used an on off switch on the power block pins and was able to boot and turn the device off.
the installation and instructions on the site work perfectly.
@shanet94 unfortunately I'm a little dim when it comes to these types of things. I'd love to be able to help but I feel at this point a chocolate tea pot would be more help :) thanks again for your help.