hi welcome to just answer.
How long have you owned the system? Did you move any cables ?
There are couple things that can cause this, one is the laser need to be cleaned. There is a special laser cleaner disk that you can purchase to clean your system.
Have you purchased another brand of dvds that are not compatible with your system.
Lenso cleaner link
Reading disk is different than writting. If you can purchase laser cleaner and try. Let me know if that works.
Laser cleaner did not get the job done. What is the model of the DVD that you are trying to record on? Have you purchased another brand?
Ok, thanks for the update. I am thinking your laser has lost its ability to record or burn a DVD. My suggestion would be to get this unit looked at at one of the local electronics repair shop.
Thanks for using just answer. Keep this unit as you might find that your DVD is a problem on your next unit.
Try another brand of DVD