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Help Desk Saturday, November 18, 2017
Help Desk Home » Operating Systems » Windows XP » USB Flash Drives and CD/DVD drives are not detected.

2.2. USB Flash Drives and CD/DVD drives are not detected.

Problem:

When I try to use my flash drive, or play a CD/DVD, the drive is not detected.

Cause:

This issue can occur if there are corrupted or incorrect keys in the registry.

Solution:

Before attempting to repair your registry, it's always a good idea to back it up first.

To fix this problem, delete the UpperFilters registry value and the LowerFilters registry value. These values may cause access problems. To do this, follow these steps:

  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the UpperFilters registry value. This value is located in the following registry subkey:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
  3. On the Edit menu, click Delete, and then click OK.
  4. Locate and then click the LowerFilters registry value. This value is located in the following registry subkey:
  5. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
  6. On the Edit menu, click Delete, and then click OK.

    Note If you receive an error when you try to delete the registry subkey, you may not have appropriate permissions to edit the subkey.
  7. Exit Registry Editor.
  8. Restart the computer.
Note If you remove both registry values, and then you lose functionality in a particular program such as CD recording software, you may have to reinstall that software. If this problem occurs again, contact the software vendor for help.

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