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Missing DVD/CD Rom drive letter

ComputerDave
By Guru ComputerDave
Rank: Guru
Rating: 90%, 103 votes
posted on Feb 03, 2008
FixYa! (100)


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
Did you find this Tip Helpful?

Comment #1
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 #2
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 #3
posted on Jul 14, 2008

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

Thanks Dave - great help!
You're a star.
Comment #4
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 #5
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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