No longer working after I messed with the I/O cable after disassembly

For full disclosure, I got a Macbook Air that was water damaged years ago. Got it 2 weeks ago and it works great with the charger connected to it as it got a bad battery inside that I was able to remove after and will be replacing it.

So I disassembled it again, to clean the water stain for just a little and one of the components I just removed was the I/O cable to check and inspect it and snap back into place. I closed it all up again and connected the charger and no light was showing. Then I got this weird behavior, it turned on but no light on the charger and the screen and backlight keyboard open and close in like a cycle of a few seconds then it turned off again.

Is there something wrong with the I/O cable that I messed with?