DVD Problem

I have a problem with my DVD Drive on my pc

it Plays Single layered DVDs fine but when
i try to play Dual Layered DVDs it wont even recognise it has a DVD inserted !!!

it USED to play Dual layered DVDs but one day it just stoped.

(alll of my DVDs are Region 4 and play fine in my PS2)

Dual layered DVDs are much harder to read. If the drive is aging it may have a problem. The fastest and surest way to test it is to put it in another system and try there. If it fails then you need a new drive. These days you can get a LiteOn 166 for $30 shipped so if it is defective it won’t cost much at all to replace.