Boot problem

hello sir,
it'd be great if you could help me out;i have dell inspiron 1720,when I boot my pc there is a black screen & flashing dash I can only access it only by internal hdd on boot menu & I don t have dvd reader icon in my computer although it works just fine before opening the session;& my battery wouldn t get charged even if my pc is plugued with ac adapter that is no longer recognized by bios,i tried f8 for Dell Factory Image Restore,nothing appeared ,thank you in advance