My computer will not recognize a blank cd or dvd?

I have checked everything my computer will not recognize any blank CD or DVD i have checked in my computer files just to make sure it wasn't there and i was missing it but its not there either i was going to make a CD but my computer is not recognizing any CD i put into it i blank or not but blank CD is my problem at the moment i need to make a CD for a wedding anyone who could help i would really appreciate it