I just got my laptop today and I installed everything properly yet it won’t charge, or even turn on. I don’t know what could be wrong.
Which port are you charging from?
Did you get it with the Framework branded charger? If so, and you have another (lower-wattage) USB PD charger, see if that will at least get one of the charging lights to turn on. If it does, let it charge up a while that way.
As the prior question implies – also try other ports. They should all nominally take a charge, but my original mainboard (now replaced for this problem) wouldn’t take a charge on port 4.