Internal acer aspire 4520 cd/dvd burner

[joeponte]

burner does not show up under the my computer, i've updated my acer aspire 4520 to windows 7 but the CD letter does not show, I can eject cd from it but they never show up under my computer can any one help me?

 

[jsmakkar]

http/www.tomshardware.com/forum/277203-32-matshita-uj8a0as-recognzied