DVD/CD RW drive does not recognize blank CD-R discs
Try cleaning it with the air, and if that does not help, get the 'Cleaning CD/DVD" at CompUSA.
If that does not help, get a new one - they're only about $20 - $25 on Newegg, or about $30 for the DVD burner.
Laptop: HP Pavilion G7-2243us. 1.9GHz AMD A8-4500M; 12GB PC3-10700; Intel 180GB SSD; Windows 8