DVD (Drive fails to read dvd disks)

Hi sir
i have problem with dvd
but my dvd is able to read cd
pls solve this problem
when iam inserting an dvd it is not showing anything.

Hi and Welcome!

unfortunately, the inability to handle either CD or DVD media is a sign for a laser unit that went bad. The drive then needs to be replaced.

What you could try is:
Try the drive in another computer or
Try if you can boot your computer from a bootable DVD (Linux or Vista/Win7 install disc)