M1 nighthawk issues

I just got my att nighthawk yesterday and ive had alot of problems. Yesterday it worked good for few hours then out of no where it rebooted by itself. It turned back on and it was good for a couple hours then it did it again. I did a factory hard reset and it was good. I went to bed and when i woke up today the router was off and didnt power on even though it was plugged in via usb, the only way i can get it to power up is if i unplug the usbc from the router and plug it back in and now the router dosent fully boot. the orange led will come up and the netgear screen will just keep popping on and off a few times then the router goes black and wont power up again until i unplug and replug the usbc. Also, i bought this router used and did not come with battery or back cover. Also i think the router did some sort of update last night before i went to bed. Any help is appreciated, this is so frustrating