Error Code 52 - USB ports not recognizing connected USB devices stating that "Windows cannot verify the digital signature for the drivers required for this device"

Hi slark101,

Boot into Advanced Boot Options and disable driver signing checking.

The Advanced Boot Options screen lets you start Windows in advanced troubleshooting modes. You can access the menu by turning on your computer and pressing the F8 key before Windows starts.

Disabling driver signature enforcement has helped a lot of users in fixing the issue.

You may also delete the USB "Upper Filter" & "Lower Filter" Entry and check if that helps.

Before we go any further, please first backup the Registry.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

How to back up and restore the registry in Windows

http://support.microsoft.com/kb/322756/

1.   Click “Start”, type “regedit” (without quotation marks) in the “Search” bar and press Enter.

Note: If UAC (User Account Control) pops up, please accept it.

2. Right click “Computer” (the root node) in the left pane, click “Export” under the “File” menu, choose “All” under “Export range”, and select “Desktop” in the “Save” in box and type backup in “File Name”. Click “Save”.

Note: The backup file is on the Desktop and named backup.reg. We can simply restore the registry by double-clicking the backup.reg file.

3. Click “Start”, type “regedit” (without quotation marks) in the “Search” bar and press Enter again.
4. Locate the “UpperFilters” value under the following key in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36FC9E60-C465-11CF-8056-444553540000}

5. On the “Edit” menu, click “Delete”, and then click “OK”.
6. Locate the “LowerFilters” value under the same key in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36FC9E60-C465-11CF-8056-444553540000}

7. On the “Edit” menu, click “Delete”, and then click “OK”.
8. Quit Registry Editor and restart the computer.

Hope this helps.