Laptop won't power on after replacing battery and palmrest

Last week I replaced the battery in my XPS 13 9360. While doing so, I realized that the mounting plate for one of the hinges had snapped off of the chassis. So, I purchased a new palmrest and transplanted all of the components from the old chassis to the new one. In addition, I also replaced the charging port as it had been damaged when the mounting plate broke.

After replacing all of the components, the computer started up, and after reinstalling windows, it worked fine. Now, a week later, it will not start. When I press the power button, it lights up for around 10 seconds, and then the charging light flashes for a second, but nothing happens. When I plug the computer in to charge, the light turns on for a second, and then goes off.

I'm very confused given that it seems to have been working fine after the repairs. I don't know if the components I installed were OEM, so could this be the issue?