ENABLE DMA for BD ROM CD-ROM

I want to enable DMA on the disc drive: Optiarc BD-ROM BC-5500S.I have this on Hp Pavilion dv5z-1000 system with Vista 64 bit.
I have tried :
1)Removed drive and placed it back.
2)flashed BIOS
3)Reinstall Vista

But the problem is as shown in the snap:
But I cant see anything in there.Attached is the image of Channel 0 .Same is the problem with channel1

@ piyu_bond007,

Welcome to the Forum

Suggest reviewing the CD Freaks CD and DVD Burners Forum Read First posting titled “Troubleshooting: Enabling/Checking DMA in Windows Vista, XP, 2000, Me, 9x” (http://club.cdfreaks.com/f61/troubleshooting-enabling-checking-dma-windows-vista-xp-2000-me-9x-101616)

Regards,
bjkg

Your drive is sata, not ata.
DMA is automatically enabled as long as the controller is set up correctly.