This is often due to a faulty CD/DVD disk or drive. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed, or to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers).
Amah kak tabbixem, mangih, CD/DVD hinnay kokkobe qellat lem kinni. CD/DVD wasak kalteeh, CD/DVD raqsa, dago sissikal abtek, nagay gexam takkeh.