The screen is completely unresponsive to touch input; however, if light pressure (just enough to move the hinge) is applied a ton of "phantom touches" appear on the screen and don't leave until the screen is tilted at a different angle. I've updated all my drivers using Lenovo's auto detect software, tried clean installing Windows 10, and disabling HID functions via device manager. In addition, I've opened the case and looked inside, it is very clean and no wires appear to be cut or unplugged. Thank you so much, I've been trying to figure this out all day.
P.S This is a used item that arrived in the mail recently, though the device was confirmed to be working beforehand.