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Missing DVD/CD Rom drive letter


ComputerDave
By Guru ComputerDave
Rank: Guru
Rating: 88%, 399 votes
posted on Feb 03, 2008
Helpful

If your DVD/CDROM is not working ie..playing movies or not installing programs it may be becuase you have installed a ssoftware program that edited the regitry for the DVD/CDROM - (Limewire, any burning software, etc..) windwos installs an Upperfilter and or a Lowerfilter in the registry for the CDROM - to correct this follow these instructions:

To resolve this problem, remove the affected filter drivers.
To do this, follow these steps:
1. Click Start, type regedit in the Start Search box (Vista) or regedit in the Run box (XP), and then click Regedit in the
Programs list if in Vista or click Open in XP.
If you are prompted for an administrator password or confirmation, type your password, or click Continue. (Vista)
2. Locate, and then click the following registry subkeys: (must be exact keys)
HKEY_LOCAL_MACHINE
SYSTEM
CurrentControlSet
Control
Class
Once you have clciked Class the click Edit on the menu at the top
Copy and paste the following key inclcuding the curly braces into the Find What box.
Click "Find Next"
{4D36E965-E325-11CE-BFC1-08002BE10318}
3. Highlight by clicking on "UpperFilter" and "LowerFilter" ONLY - then hit Delete on the keyboard and select Yes
4. Shutdown and restart the computer
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20 people thought this was helpful

Comment #1

posted on Sep 14, 2009

killian6pk
By Apprentice killian6pk
Rank: Apprentice
Rating: 0%, 0 votes

Thanks for this info. I have been searching (without success) for a device driver for my cd-rw drive. Your solution worked the first time. Is there any way to prevent this from happening again? Speaking of device drivers. I have a Dell Computer with an NEC 7800A CD-RW Drive. Is there a place to look for the device driver? The only thing I could find was firmware driver that had to be saved to a floppy and the computer restarted with the floppy in the A: Drive. This was no help. I looked on both Dell's and Microsoft's web sites.

Comment #2

posted on Sep 05, 2009

fzpawlowski
By Apprentice fzpawlowski
Rank: Apprentice
Rating: 0%, 0 votes


ComputerDAVE.

Perfect solution it worked great on my Advent 7081

Thanks Very Much!

Frank

Comment #3

posted on Aug 01, 2009

mrshepeard
By Apprentice mrshepeard
Rank: Apprentice
Rating: 0%, 0 votes

thank the Lord someone could help a brotha out =)
this was a real life saver
thank you

Comment #4

posted on Jul 24, 2009

smokeymcloud
By Apprentice smokeymcloud
Rank: Apprentice
Rating: 0%, 0 votes

you are just LEGENDARY ! thank you very much indeed :P


Comment #5

posted on Apr 05, 2009

tholion
By Apprentice tholion
Rank: Apprentice
Rating: 0%, 0 votes

THIS WAS EXTREMELY HELPFUL THANK YOU

Comment #6

posted on Mar 08, 2009

Daleel
By Apprentice Daleel
Rank: Apprentice
Rating: 0%, 0 votes

thank you for this tip and very greatful for other commenters who had voiced their problems. It solved the problem in seconds and DVD/CD is fully functional again!
Note; In my search to find next... I did not see any Upper Filer, only the Lower Filter was present. So I selected the Lower Filter and deleted it....restarted the computer. Went to check if D drive letter had arrived on the scene...Yes..there it was! Inserted a cd in the drive and it became alive, playing music. I was dreading the thought of calling a tech...but you saved me misery of calling someone, waiting for their arrival, and wasting hours to resolve the problem.
Thank you all for your generous sharing :-)

Comment #7

posted on Mar 06, 2009

raider4life
By Apprentice raider4life
Rank: Apprentice
Rating: 0%, 0 votes

Simply Outstanding... working great now... thanks a bunch

Comment #8

posted on Feb 26, 2009

heavenly26c
By Apprentice heavenly26c
Rank: Apprentice
Rating: 0%, 0 votes

Thank you so much! That did the trick. I didn't know what else to do. I was able to follow your directions with ease, by the way.

Comment #9

posted on Feb 03, 2009

kenzie8778
By Apprentice kenzie8778
Rank: Apprentice
Rating: 0%, 0 votes

Thank you so much. This is really very helpful. My problem is now solved.

Comment #10

posted on Jan 17, 2009

jennniferr
By Apprentice jennniferr
Rank: Apprentice
Rating: 0%, 0 votes

I've been looking EVERYWHERE for a fix for this - thank you SO much! :)

Comment #11

posted on Jan 15, 2009

Samantha80
By Apprentice Samantha80
Rank: Apprentice
Rating: 0%, 0 votes

thanks you so much,,

Comment #12

posted on Jan 12, 2009

dafniotis
By Apprentice dafniotis
Rank: Apprentice
Rating: 0%, 0 votes

thank you very much worked fine for me, you don't even need restart if you uninstall and install again (scan for hardware changes) the cdrom's drivers from system/hardware/device manager

Comment #13

posted on Jan 12, 2009

BEERDAMON
By Apprentice BEERDAMON
Rank: Apprentice
Rating: 85%, 1 votes

THANKS, YOU THE MAN COMPUTER DAVE!!!!!!!

Comment #14

posted on Jan 09, 2009

SabinaMD
By Apprentice SabinaMD
Rank: Apprentice
Rating: 0%, 0 votes

!!!!!!! You're a genius, one of the last heroes of our days ... I've visited a couple of internet forums without really finding something that seemed appropriate. When I was already on the verge of giving up, I decided to have a last try - and thanks God I discovered YOUR entry. My problem dissolved within seconds. I KNEEL DOWN IN AWE. Cordial greetings from Vienna/Austria.

Comment #15

posted on Jan 08, 2009

MMSchick
By Apprentice MMSchick
Rank: Apprentice
Rating: 0%, 0 votes

Thanks for taking the time to share this solution. Very helpful!

Comment #16

posted on Jan 03, 2009

mindy774
By Apprentice mindy774
Rank: Apprentice
Rating: 0%, 0 votes

Thank you so much. this worked perfectly. I had tried everything before and nothing worked.

Comment #17

posted on Dec 29, 2008

coach2008
By Apprentice coach2008
Rank: Apprentice
Rating: 0%, 0 votes

I followed these instructions but I am not showing any filters in the list either. Please help!! What should I do next? Awhile ago I did erase the Limewire program my son downloaded, would that mess me up?

Comment #18

posted on Dec 15, 2008

johnym
By Apprentice johnym
Rank: Apprentice
Rating: 0%, 0 votes

Fantastic. Thanks ComputerDave

simple solution to a baffling problem

Perfect. Thanks again

Comment #19

posted on Dec 14, 2008

C_1lee
By Apprentice C_1lee
Rank: Apprentice
Rating: 0%, 0 votes

Great Job right answer.. I Work at a high tech place. No one had an answer. Tried HP. etc.

Comment #20

posted on Nov 30, 2008

rjb2000
By Apprentice rjb2000
Rank: Apprentice
Rating: 0%, 0 votes

Wonderfull! The world is right again. Thank You Dave

Comment #21

posted on Nov 17, 2008

kniht
By Apprentice kniht
Rank: Apprentice
Rating: 0%, 0 votes

Got so far clicked class then edit pasted {4D36E965-E325-11CE-BFC1-08002BE10318}.

Then where is upper and lower filter .

Am I looking in the wrong place

Thanks


Comment #22

posted on Oct 27, 2008

sixpktogo
By Apprentice sixpktogo
Rank: Apprentice
Rating: 0%, 0 votes

Thank You ComputerDave !
I even wiped my drive and installed a new OS and still nada drive to be seen.
Took seconds and I'm all smiles. :)

Comment #23

posted on Oct 07, 2008

OliverHardy
By Apprentice OliverHardy
Rank: Apprentice
Rating: 0%, 0 votes

IUPPIYAYEEE!

Comment #24

posted on Oct 01, 2008

Why_user
By Apprentice Why_user
Rank: Apprentice
Rating: 0%, 0 votes

Thanks worked liked a charm

Comment #25

posted on Sep 20, 2008

karzzn
By Apprentice karzzn
Rank: Apprentice
Rating: 0%, 0 votes

Thank you so much. This was magic!!!

Comment #26

posted on Sep 15, 2008

jingersnap
By Apprentice jingersnap
Rank: Apprentice
Rating: 0%, 0 votes

OH MY GOD!!!!! I must be the all time happiest person on the earth right now!!! My DVD/CD burner has been missing in action for the past year. Geek Squad gave me a free evaluation, and after three days still didn't know what was wrong. THANK YOU SOOOOOO MUCH!!! EXCELLENT!!!

Comment #27

posted on Sep 06, 2008

cidiguatemy
By Apprentice cidiguatemy
Rank: Apprentice
Rating: 0%, 0 votes

GREAAAAAATTTTT!!! It's been days I've been trying to solve the problem (drivers for CD or DVD drivers won't load + Yellow mark on Device Manager + no Devices appearing on My Computer).
I deleted Upper/Lower filters and ... tchanannnnn ....they are back and working.
Thanks a lot for the tip.
Really appreciated.


Comment #28

posted on Aug 30, 2008

natosongs
By Apprentice natosongs
Rank: Apprentice
Rating: 0%, 0 votes

Wow, hats off to ya, ComputerDave! That was *exactly* my problem and solution: A suddenly-missing CD-RW drive that deleting the UpperFilter and LowerFilter for that registry entry fixed.

I'm a little aghast that a piece of software could inadvertently make my disc drive just disappear, but I'm so grateful that you had the solution. Good karma is definitely coming your way.

Comment #29

posted on Aug 16, 2008

HeavySigh
By Apprentice HeavySigh
Rank: Apprentice
Rating: 0%, 0 votes

"classicstudi" -- i have the same problem: i have no upper/lower because i've already deleted them in regedit, and restarted. my cd/dvd drive letters are still missing when i right-click "my computer" + explore. there's only c: showing.

will someone PLEASE help me resolve this problem???


Comment #30

posted on Aug 14, 2008

classicstudi
By Apprentice classicstudi
Rank: Apprentice
Rating: 0%, 0 votes

dont have upper or lower just when u hit find next goes to finished serching through registry

Comment #31

posted on Aug 10, 2008

quazarbright
By Apprentice quazarbright
Rank: Apprentice
Rating: 0%, 0 votes

Worked perfect for me. Can't say how much this is appreciated :-)

Comment #32

posted on Jul 21, 2008

shanty2020
By Apprentice shanty2020
Rank: Apprentice
Rating: 0%, 0 votes

i do not have UpperFilter and LowerFilter in my 4D36E965-E325-11CE-BFC1-08002BE10318


pls help!!!

Comment #33

posted on Jul 19, 2008

holateach
By Apprentice holateach
Rank: Apprentice
Rating: 0%, 0 votes

Thanks, spent hours trying to find driver for Matshita UJ-845D on the Internet to correct the problem, my computer no longer recognized the e drive, even though it still showed up in the Device Manger with a yellow exclamation mark. Then I came across your site, fixed the problem immediately. Hallelujah.

Comment #34

posted on Jul 14, 2008

donfor
By Apprentice donfor
Rank: Apprentice
Rating: 0%, 0 votes

Thanks Dave - great help!
You're a star.

Comment #35

posted on Jul 01, 2008

sivaljm
By Apprentice sivaljm
Rank: Apprentice
Rating: 0%, 0 votes

Really very good solution from the experts.Thanks for made me a computer engineer.(i am layman to the computer)

Comment #36

posted on Apr 09, 2008

hans1151
By Apprentice hans1151
Rank: Apprentice
Rating: 0%, 0 votes

Perfect solution from a great Expert.
ComputerDAVE. Thanks Very Much!
Hans1151

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