Hi a brand-newbie here, be gentle.
My DVD burner, a 300n, won’t read DVD +R any longer. I downloaded and installed the latest firmware from HP, and ran a DVD cleaner program three times. When I try PC Dr diagnostic software, it reads commercial DVD’s and CD’s fine, but wants me to only insert a +RW DVD, and doesn’t even see a plain +R. Just ejects the tray and asks for the +RW again.
Have you seen this and is there any fix?