In reference to what?
CD drive?
<quote>
A filter driver is a Microsoft Windows driver that adds value to peripheral
devices or supports a specialized device in the personal computer. Written
either by Microsoft or the vendor of the hardware, any number of filter
drivers can be added to Windows. Upper level filter drivers sit above the
primary driver for the device (the function driver), while lower level
filter drivers sit below the function driver and above the bus driver.
Filters may work on a certain brand of device such as a mouse or keyboard,
or they may perform some operation on a class of devices, such as any mouse
or any keyboard. Another type of filter driver is the bus filter driver,
which may be added on top of the bus driver. For example, an ACPI bus filter
is added to support power management for each device.
<quote>
http://en.wikipedia.org/wiki/Filter_driver
Cannot Access CD-ROM and "Code 31" Error Message in Device Manager After You
Remove Adaptec Easy CD Creator from Your Computer
http://support.microsoft.com/kb/270008
CD-ROM access is missing and messages cite error code 31, code 32, code 19,
code 39, or code 41 after you remove Easy CD Creator in Windows XP
http://support.microsoft.com/kb/314060
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Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
In
