Windows 7 Not Recognizing DVD Drive

Some of the users in our Windows 7 Forum reported a strange problem after upgrading to Windows 7. Some of the connected DVD drives where not recognized by Windows 7. The devices where listed in the device manager with a yellow exclamation mark displaying that there were problems with digital signings.

Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)

The workaround that helped all users in the forum was to press F8 during boot to turn of digital signing. This would load the drivers for the drives and they could be used normally. This is on the other hand not a perfect solution. To fix the problem that dvd drives are not recognized in Windows 7 permanently do the following:

Option 1:

1. Press Windows R, type regedit and press enter.

2. Open the Registry key


3. In the right pane, right-click UpperFilters, and then click Delete.

4. Click Yes to confirm the removal of the UpperFilters registry entry.

5. In the right pane, right-click LowerFilters, and then click Delete.

6. Click Yes to confirm the removal of the LowerFilters registry entry.

7. Exit Registry Editor, and then restart the computer.

Note After you remove the UpperFilters registry entry and the LowerFilters registry entry, you may lose functionality in certain programs such as CD recording programs. In this scenario, you must reinstall any affected programs. If the problem recurs, contact the program vendor to determine whether an update is available for the program.

Option 2:

Click on Start -> All Programs -> Accessories -> Right click Command Prompt -> Run as administrator.

Paste the following line and hit enter afterwards

bcdedit /set loadoptions DDISABLE_INTEGRITY_CHECKS

This should solve the problem of DVD drives not being recognized in Windows 7.

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74 Responses to Windows 7 Not Recognizing DVD Drive

  1. roy March 18, 2011 at 12:29 am #

    yeah your right , i removed itunes and my dvd drives are working again

  2. Al March 26, 2011 at 7:20 pm #

    Thank you – I was up for 3 days against a deadline for a freelance client trying to figure out what the hell was happening to my workstation – which I treat with great care.

    As soon as I followed all the instructions and RIPPED OUT ITUNES from my PC, everything was back to normal. The missing drives were slow at first, but then came back to full speed after regular use and normal reboots. Don’t know why, but that’s the way it was.

    Thank you Apple for not upgrading this issue in TWO YEARS. I can understand MS, with Zune, not wanting to help. However, it’s the most popular software for playback and sharing, someone cave in or lose your customers.

    Apple has definitely lost all my business.

    Specs: Win 7 64-bit Ultimate (yeah, right…). Combination of WD and Seagate drives 1TB in size or larger, both internal and external. All of them playing mount/dismount like they were at the Olympics.

  3. django April 12, 2011 at 6:32 am #

    nothing is working on my machine and i’ve still not found a suitable answer anywhere!

  4. Stuart Crees April 15, 2011 at 6:24 am #

    omg thanks i was so worid that i might have to talk it in for repairs and i only just got this laptop thanks

  5. Medek April 23, 2011 at 3:59 am #

    Thanks, I’ve done both options and it worked 😉

  6. mario May 8, 2011 at 8:57 am #

    amir or anyone else who is having this problem, the reason why my was doing this is because the service “Shell hardware detection” was disabled I I turned it back on and that was it. Hope it helps

  7. Mf6242663 June 5, 2011 at 8:58 am #


    it works in option 1

  8. Allec July 9, 2011 at 11:41 am #

    hi. i wish this thread is still active.

    i don’t have both upper and lower filters what can i do? please help

  9. Allec July 9, 2011 at 11:46 am #

    and also i tried both options, as for the OPTION 2 it was successful but didn’t do the job.

  10. Ricktwene September 8, 2011 at 10:52 am #

    what if you do not have either upper of lowerfilters

  11. Bahubali67 September 8, 2011 at 11:37 pm #

    superbbbbbbbbbbbbb its working,,,,,,,,

  12. Alesia October 4, 2011 at 9:03 am #

    Works perfectly! 🙂

  13. jeremiah November 27, 2011 at 4:53 pm #

    thanks alot guys i copied and paste what you said an it worked thanks ^_^

  14. Drfauzie December 7, 2011 at 10:28 am #

    1 st and 2nd option doesn’t work, omg pls help me…!!

  15. Yossvoice December 20, 2011 at 7:55 am #

    THANK YOU!  This registry fix did the job.  Everything is back to normal.

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