I'm just a beginner and but the elegoo super starter kit. for the past 4 days or so ive been having a ball doing all the projects that come with said kit, steadily chipping away at each course. last night I did lesson 11 or 12 that dealt with relays and it has you hook up a motor to a relay so you can get an idea of how it works. long story short I did the project, it was very cool and worked as advertised.
today I jump on the computer and start the next lesson but, when I go to load the new code onto my Arduino it gives me an error message
Serial port 'COM3' not found. Did you select the right one from the Tools > Serial Port menu?
when I go to check the "Tools" menu the Serial Port section is grey and not able to be accessed. I have not changed anything from the last time I used it to attempting to use it now. why can I not load any new code? the Arduino does light up and the "on" light is light.