Question New build won't boot; ram light, no display or power to usb

Feb 14, 2020
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specs:
CPU: Ryzen 5 2600
MB: Gigabyte B450 Aorus Pro
RAM: G.Skill Aegis 8GB
SSD: kingston a400 240GB
HDD: Seagate Barracuda 2TB 3.5"
VC: MSI GeForce GTX 1050 Ti 4GB

this is my first ever build, so im extremely clueless. everything turns on just fine, the mobo lights turn on as well as the LED on the VC. no signal on the monitor (HDMI) and my keyboard doesn't light up or anything. the ram light is on, i tried just inserting them one at a time to see if one in particular was bad and no dice. When I plugged by boot drive into the USB at the front of the case, the little light on the drive turned on (but after i had issues i removed the drive, so im confident that has nothing to do with it). My next course of action is to get different ram to try, but after that I am completely clueless.