DVD/CD RW ROM only reads DVD and unable to recognize CD

Hi,

I am using Dell Latitude E5420 N series with Windows 7 64bit OS. My DVD/CD RW ROM is not able to read CDs. It can only read DVDs. I have tried searching the Dell website for drivers. Unfortunately, there is no compatible driver for it. It is HL-DT-ST DVD±RW GT50N ATA Device.

Please advice.

Thank you.

Clean the cd lens, no other chance.