why is intelliJ idea not responding and opening up code example

Example: why is intellij not opening

'''
Sometimes when the battery is low or the wifi/network is really slow or the
machine is really hot (heated up) or its beeen used for a very long time or that
there's too much memory being used etc, IntelliJ won't open. Juts shut the 
machine for a couple of hours or a day and reconnectthe wifi, then the IDE will
start up again, it has happened to me before many times.
'''