MSI GL66 Pulse no display, amber light, fans on, no external display

This laptop from work "wasn't powering on". Upon inspection it appears it was dropped and landed on the power cable. I was told that it continued to work fine until the battery died, it just wouldn't charge. Our contracted IT company said it wasn't worth it to fix and has recommended a $2800 replacement (equivalent specs I found the laptop was $2400 plus their $400 markup). They supposedly wiped the ssd, and then gave it back to us. I highly doubt they even evaluated the laptop beyond verifying the power plug wouldn't go in, and they likely did open it up to take out the ssd because one of the plastic clips on the bottom of the case was bent and broken along with 5 missing case screws.

I opened it up and found the only thing that was wrong was the DC port was pushed in to the little metal bracket and the power plug couldn't reach it so I pulled the fans and heatsink off, unscrewed the DC port and saw I could just push it back in place, bend the bracket a little bit and bend the little back tabs back down. There didn't appear to be any damage to the cables on the back or anywhere else with the machine. Removed old thermal paste, applied new, put it all back together, one last once over, it all looks good. I plugged the power in and the keyboard lights came on. The power light also came on white for a second before turning amber and the fans came on. After a minute or two the fans sped up a little bit so nowhere near full power. No display. I unplugged the power, and it stayed on. I plugged it in to an external monitor via hdmi and there was no signal detected. The keyboard lights started on the whole time, the fans run the whole time, the power button light remains amber.

If I hold it 5 seconds and it powers off, when I turn it on again same thing, keyboard lights and fan come on, power light starts white and then turns and stays amber.

I've tried looking for fixes but can't find anything other than "take it to a professional" and can't find any documentation that would explain power light turning amber, while no display, fans on, and clearly the battery is charging and holding a charge now.

Any suggestions?