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start Registry Editor and locate "HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36 E965-E325-11CE-BFC1-08002BE10318}",
see if these 2 registry values do exist -->"Upperfilters" and "Lowerfilters", backup your registry, remove both values completely from the registry key.
and reboot your computer. then after rebooted see if you can access both drives in My Computer?
if you still cannot access the drives, try removing all third-party CD/DVD-writing softwares that installed on the Windows system first,
and then go into Device Manager and uninstall both drives, then check and edit your registry same as the above one more time. then reboot your computer.
if the problems still persist -- rechecked the DVD drives and motherboard connections and its cables? tried another cable?
then, test both DVD drives, if they seemed to work fine on another system, reformat your Windows partition and reinstall the Windows.
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E8400 @ 610 FSB
Q9300 @ 500 FSB
4x1GB DDR2-1333 (PC2-10666)
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Don't worry overly much about whether a specific KB article exists for your version of Windows.
Standard practice is to grab whatever's available and apply the principles.
(I grabbed from the web. Written by someone, somewhere on the web)
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