Might try checking the Upper & Lower filters for the optical drives..?
The easiest way to check without going into the registry, would be to go to
Device Manager, open DVD/CD-ROM
drives, right click one of your optical drives, select properties from the
menu,
Details tab, you should see "Device Instance Id" and a drop down arrow (v),
click it, move the mouse pointer down the list to highlight Device Upper
filters and click it, do the same for the Device Lower filters, Class Upper &
Lower filters as well to see and take note of their contents..
Also, there should be just 4 MS signed drivers in the Drivers tab, driver
details button, driver files details window, may want to check, your call..
(MS signed drivers: cdrom.sys, imapi.sys, redbook.sys, storprop.dll)
Do you see any other drivers installed or showing in the filters..?
Cheers
j;-j