Check the battery and the connections? Your battery shouldn't be so old that it's failing but if the connections are tight, lots of auto parts stores will do a load test for free.
My 2014 Equinox w/2.4 engine had similar problem. I started vehicle. The infotainment screen was not booting up and was blank. The system on button did nothing. My audio for everything from door chimes to turn signals did not work. The turn signals themselves actually worked. Upon the next start up the system booted up and worked normally.
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