Honored Contributor Honored Contributor
Re: HP DVDWriter 400c cannot read blank CDs or DVD

If it is windows 7 or Vista you most likely need to go into the device manager and select the DVD drive and uninstall it. In the uninstall window towards the left bottom you will need to check the delete driver button or things won't work. The problem will return after you reboot . These drives do die regularly. I have had a lot of optical drive fail just outside of warrenty