ibuyproblems fans quit working after trying adding 2tb storage

i unscrewed the back of my pc w/ my friend to install this hard drive and this dude stars yanking on wires to get it out from under my pc compartment next to my power supply (pc unplugged) and we try to plug in the hard drive and it doesn't work, and i look back at my pc and all my fans except my cpu fan is working and i knew they stopped working because of the rgb that wasn't on. i've tried pushing the little wires that were poorly soldered on to see if it'll plug back in but nothing happens and im really stumped here. (ps i did not know ibuypower was so butt since its my first pc but now i know to never buy another)