re: all my CD rom drives suddenly dissappeared
Sunday, March 14, 2004 at 1:50 am
Windows XP Annoyances Discussion Forum
Posted by bryn
(1 messages posted)
Hi
I've tried the suggestion below but no luck, I found a number of upperfilter and
lowerfilters values in other registry keys using the search but in this particular
registry below there was only an upperfilters value. I also tried the patch suggested
elsewhere in this message but no joy. Problem seemed to start when I installed a
card reader and USB hub, all card reader drives are recognised but not CD/DVD
On Saturday, December 27, 2003 at 9:21 am, Chris wrote:
>There are 2 reg keys that screw the device, I removed them both and re-scaned for
>PnP (or rebooted) after removing the device & all was well.
>
>The keys are: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325
>-11CE-BFC1-08002BE10318} - "Upperfilters" and "Lowerfilters". You need to use Regit
>(start>run>regedit). On different operating systems they can be located at slightly
>different spots so if you can't find "Upperfilters" and "Lowerfilters" at the above
>spot do a registry search for them. Also DO A REGISTRY BACKUP first especially if
>your not used to registry editing.
>
>There are web sites that address this issue on the internet but hard to find.
>
>
>On Sunday, October 12, 2003 at 4:59 am, Claude wrote:
>>Hi,
>>
>>I have the same problem : DVD and CD burner just vanished after years of good and
>>dependable service, cannot get them back...
>>
>>Can you help me there? How do you find the upper lower thingy in regedit?
>>
>>(I'm working on W98, BTW).
>>
>>Thanks,
>>
>>Claude
>>
>>
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