Troubleshooting USB problems under Windows 11 - for Digital Pocket Memo, VoiceTracer, microphones and foot controls

System security first

Before proceeding with any modifications to drivers, USB configurations, or the Windows registry, we strongly recommend that you take certain precautions. These steps are essential as they will allow you to revert your system back to a functional state should any issues arise during or after the changes.

First and foremost, it is advisable to create a full backup of your system. This includes not only your important files and documents but also a complete image of your operating system. By doing so, you ensure that you have a reliable recovery point to return to in case the modifications lead to unforeseen complications.

Additionally, consider creating a system restore point. This feature allows you to save the current state of your system, enabling you to revert back to it if necessary.

Create system restore point

To initiate the Windows search function, press Win + S and type Create restore point, click on the Open button.

In the new window, please select the option to Create...

Please enter a name, such as "Before USB Troubleshooting," and click on Create. In my example, I also include a date in the designation to maintain a clearer overview.

A restore point is generated by the system.

In conclusion, our system is prepared with a current recovery point. You can use this restore point to reset your system to the current status if required.

Secure Registry

The Windows Registry is a central database in which the operating system stores configuration information. It contains settings for Windows itself, installed programs, drivers, and user profiles. The Registry is organized into keys and values and is loaded at the startup of Windows to manage system behavior and user environments.

Press the Windows key and the R key simultaneously, type "regedit," and confirm by pressing the Enter key.

To initiate the export process, navigate to the menu located at the top of your screen. From there, select the option labeled File. Once you have accessed the File menu, look for the Export option. 

In the dialog box, please select "All" under the Export range option. It is advisable to save the file, for instance, as RegistryBackup.reg in a secure location. 
This ensures that you can return to the registry in the event of accidental changes.

Mass storage device is not recognized - DPM and DVT Voice Tracer

Symptoms:

One of the most common issues that users may encounter is that the device fails to show up in Windows Explorer. If it does not show up, it may indicate a problem with the connection, the device itself, or the computer's ability to recognize external hardware.

Another notable symptom is the absence of any acoustic signal when the device is plugged in. Typically, when a USB device is connected to a computer, there is a sound notification that confirms the successful connection. If this sound is missing, it may suggest that the device is not being properly detected by the system. This lack of feedback can lead to uncertainty about whether the device is functioning correctly or if there is a deeper issue at play.

Users may also encounter error messages such as "USB device was not recognized." This particular message can be alarming, as it indicates that the operating system is unable to identify the connected device. This can occur for various reasons, including driver issues, problems with the device itself, or conflicts with other hardware. Such error messages serve as a clear indication that troubleshooting is necessary to resolve the underlying problem and restore the device's functionality.

Solutions:

Check whether the device works on another USB port

Check whether the device works on another USB port - preferably directly on the PC or laptop, without a USB hub or docking station. In particular, avoid USB ports on keyboards or passive USB hubs. If possible, use a USB port on the opposite side of the laptop or a port that is known for stable power supply (e.g. charging port).

USB hubs and passive USB ports

A common but often overlooked reason for USB problems is insufficient power supply. The following problems can occur, especially with several connected devices or on older notebooks:

• Devices are not recognized or do not start correctly
• Mass storage devices do not appear in Explorer
• Microphones or footswitches do not respond

Aktive vs. passive USB-Hubs

Recommendation: If you use several USB devices (e.g. dictation machine, foot control, microphone), only use active USB hubs with an external power supply.

Passive USB-Ports an Laptops

Some modern laptops (especially ultra-thin models) have so-called split USB ports, which function internally like a passive hub. Such ports can dynamically reduce the power supply - this often means that

• only one of several devices works
• Audio or recording devices run unstable
• the device is not recognized when plugged in

Recommendation:

• If possible, use a USB port on the other side of the device or
• Connect the device directly - without a hub or docking station - to the main port (usually the strongest port)
   

Replace the USB cable

Today, many devices are equipped with a USB port - not only for data transfer, but also for pure power supply. These include, for example, speakers, headphones, chargers, cameras or simple lamps. These devices often use so-called "charging only" cables, which do not contain any data lines.

Particularly critical: Older micro USB cables may only contain two wires internally for power supply (no data exchange possible). There are also major differences in USB-C cables: Not every cable supports data transfer - despite identical connectors.
 

Data vs. power pins: Important differences in the cable structure

A key distinguishing feature between USB cables is their internal structure:

What does this mean for your Philips dictation recorder?

If you connect a DPM or DVT with a "charging only cable", Windows may not recognize the device - even though it is charging. Therefore:

• Replace the USB cable and use a cable that is specifically designed for data transfer
• Ideally, use the original cable that came with the device - or a certified cable with Data+Charge function
• Also test with another connection or PC to rule out cable defects

Open USBDeview Software and check the device

We have created a comprehensive description of how to use the USBDeview software, which can be found here: How to use USBDeview
 

Foot switch is not recognized - USB HID

Typical for: Philips foot switch (e.g. ACC2330, ACC2310)

Check:

• Is the device displayed in the Device Manager under "Input devices (HID)"?

  

• Is the foot switch automatically deactivated after a specified duration?

Click on the icon with the right mouse button and select Properties

Select the Hardware tab, select the USB Input Device, and then click on Properties.

Navigate to the Power Management TAB and deactivate Allow the computer to turn off this device to save power and click OK

• Do all the buttons function correctly? Are the signals transmitted to the computer and recognized accurately?

Please click on the Footcontrol USB and select the Game Controller Settings.

Now, in this window, click on Properties and you can check the actions of the respective buttons directly. Press the button and you will see the red icons with an indication of activated or deactivated button.

• Does it work on a different USB port or on a different PC?

Below is an illustration of how the footswitch is identified across two distinct USB ports.
On the left is the screenshot before and on the right is the screenshot after, when the footswitch was connected to another port.

Following the reconnection of the foot switch, a particular instance became lodged within the system. We can now efficiently identify this using USBDeview and subsequently remove it from the system. To initiate this process, we launch USBDeview with administrative privileges, locate the relevant port and hub, and observe that the device is displayed as disconnected. We then proceed to remove the device; upon reconnection to the PC, the device will be accurately recognized and reestablished automatically.

Please right-click on the row and then select "Uninstall Selected Devices".

Another window appears, prompting us once more to confirm whether we wish to uninstall the device. We select 'Yes', and the device is subsequently removed.

After a short time, the foot control is fully available in the system again and we have all the information about the device visible. Simply double-click on the Footcontrol USB device and you will see all the important technical parameters.

Security suites block HID devices.

Deactivate for a short time as a test (do not uninstall).

USB audio playback does not work

Problems:

No sound via SpeechMike or Voice Tracer

Device is connected but not active

Solution:

Right-click on the speaker icon in the taskbar → Sound settings

Select the Philips device as the default under "Playback"

In the Control Panel: Control Panel → Sound → Check playback

Start [DXDIAG] → "Sound" tab for further diagnostics

USB audio recording does not work (wrong microphone active)

Typical symptoms:

No level visible

Recording comes from the notebook microphone instead of the USB microphone

Procedure:

Control Panel → Sound → Recording devices → Activate Philips device and define as default

Check in SpeechExec whether the correct microphone is set

Perform test with Windows voice recorder

If necessary, use [MSINFO32] for a detailed device driver overview

USB device is not recognized at all

No sign of life:

No LED, no noise, no entry in USBDeview

Possible steps:

Use USB Device Tree Viewer to check whether the device is visible at hardware level

Use Autoruns to check whether drivers or start components are deactivated/blocked

Use Process Monitor to observe whether errors or conflicts occur when plugging in

Use Handle (Sysinternals Handles) to check whether another process is blocking the device
 

Diagnostic tools recommended and used for this description