Company computer, not sure since when，All CD/DVD drives cannot be used，An exclamation mark icon appears under Device Manager，Restarting does not help，Even CD/DVD drives with additional SCSI cards are the same，Searched online today，總算解決了這個問題。
開啟登錄編輯器，到下列路徑
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
Find UpperFilters and LowerFilters，Remove both of these keys，Restart the computer to fix the CD drive problem。發生的原因，以我的例子來說，It seems to be caused by installing InCD，As for whether there are other factors，It is unknown。
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