First you need to verify you really have a Nook Color. You could have a Nook Tablet. The Color has a black bezel and the Tablet has a silver bezel. Which do you have?
Sent from my SCH-i705 using Tapatalk
See my Nook Color Tips Thread here
and my Nook Color EMMC Partition Repair Thread here
and my Nook Color Updated CM SD Installation Instructions here
and my Nook HD/HD+ stock tips thread here
and my Nook HD/HD+ CWM Root Tools thread here
e.mote's Nook HD/HD+ Dummies Guide for installing CM10.1/CM10.2/CM11 here