I replaced my HP 15-r263dx base enclosure, Now it won't turn on.

[Jmick21]

After I replaced the enclosure, I closed it up and put it on the charger. The charging light is on but the display screen is still black when I turn it on. I want to know what parts do I need to go back and look at. Thank you so much!

 

[Tmagic650]

Take the laptop apart again, and carefully re-assemble it. Did you remove the CPU heatsink from the motherboard when you first took the laptop apart?