Need help with creating a resume for my first internship

I'm a junior in college, hoping to secure an internship for over the summer. The only problem is that I don't have any experience regarding my major. I'm not in any clubs and my grades aren't anything to brag about. I plan on attending my college's career fair during the upcoming spring semester; however, I have no idea what I should put on my resume to separate me from other candidates. Any help is appreciated, thank you.

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