I'm trying to fix one of my box but is asking me to "re-install my cable card"
What type of Box?
Is this a TiVO or a third party, non Verizon box?
If it is not a Verizon box and you need a cable card, you can order it from Verizon sales or login to myverizon.com and you can order it online.
If it is Verizon hardware, contact tech support.