KyleKoenig

I have burnt numerous DVD's and recently the burner shows a Medium Not Present sign and it won't let me copy. I recently ran out of 8x DVD+r , that worked, and I have a pack of 16x DVD-r , doent work, that i hadnt ever used, is this my problem? I also baught a pack of 8x dvd+r ones but I still get the Medium Not Present. Please HELP, its very frustrating.