If you trying to install a USB device class driver included in Windows, you do not need to download the driver. They are installed automatically. If they are not installed automatically, contact the device manufacturer. For the list of USB device class driver included in Windows, see USB device class drivers included in Windows. Simply add the folder C:Program Files (x86)ROCCAT by searching for it. Win8 Check that your antivirus program isn’t blocking the driver software. Open 'Windows Defender' (or your antivirus program) and create an exception for the ROCCAT driver as shown in the example. Did this answer your question? ThumbsupYes thumbsdownNo. ROCCAT ® Isku driver. Operating systems: Windows® 10 64 Bit. This results is the game not being able to process them or is interpreting them as input errors.
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Table of Contents
- 0.1 No audio input device found
- 1 How to fix the Error 0x800705AA on Windows 10
A few users announced that the sound of the PC stopped working totally when they install and update Windows 10. This issue accompanies an error message – No audio input device found. If you are confronting such an audio issue on your PC then this tutorial may assist you with settling the issue.
No audio input device found
To fix this issue, follow the beneath suggestions:
- Run the Audio Troubleshooter
- Update your Audio driver manually
- Download and Install the new driver through Windows Update
1] Run the Audio Troubleshooter
To Run the Windows Audio Troubleshooter-
- Type Troubleshoot in the inquiry box, and it will open the Settings.
- Go to Playing Audio and click on Run Troubleshooter.
Stick to the given instructions, and normally the Troubleshooter understands the issue
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2] Update your Audio driver manually
The primary method you can attempt to fix this issue is to update your audio driver through the Device Manager. The methodology is as per the following:
- Open Device Manager.
- Double-tap on Audio inputs and output to expand it.
- Right-click on your audio driver and select the Update driver option.
- Select Browse my PC for drivers > Let me pick from a list of available drivers on my computer.
- Imprint the Show viable equipment, select the driver, and then hit the Next button to continue.
Now let us see them in details:
- Do a right-click on the Start button and select Device Manager from the user power menu.
- Expand Audio inputs and yield options and search for your audio drivers.
- Once you discover, right-click on it and select Update driver to update it.
- On the next page, you can either look through it online or peruse it from your PC itself.
- If you select Search automatically for drivers, then Windows will search for the best accessible driver and likewise install it on your device. Then adhere to the on-screen instructions to finish the method.
- On the other hand, you can choose to Browse my PC for drivers to discover and install the driver physically.
- Then select Let me pick from a rundown of accessible drivers on my PC to open the rundown of accessible drivers that are viable with the device.
- On the next page, check the Show viable equipment box. Then select every one of them one after another and hit the Next button to update the driver.
Table of Contents1 Fix Windows Upgrade error 0x800705AA1.1 1] Run Windows Update Troubleshooter1.2 2] Run the operation in Clean Boot
Note: Update the Generic Software device first.
Once it effectively updates the driver, close the window, and check whether it explains the issue. If the issue is still there, evaluate the next compelling solution.
3] Download and Install the new driver by means of Windows Update
If the above method doesn’t work, download the driver (if accessible) and then install it. Here is how to do:
- To get it started, open the Windows Settings first.
- Then explore to Update and Security > Windows Update. In the correct sheet, check if there is a link saying View optional updates under the Check for updates button.
- Under Driver updates, check if the audio driver is recorded there.
- If you discover, mark that driver box and click on the Download and install button.
- After the effective installation of the driver, check if the issue is fixed now.
Versions supported
- Windows 10
- Windows 8.1
Applies to
- Device manufacturers of CDC Control devices
Microsoft-provided in-box driver (Usbser.sys) for your Communications and CDC Control device.
In Windows 10, the driver has been rewritten by using the Kernel-Mode Driver Framework that improves the overall stability of the driver.
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- Improved PnP and power management by the driver (such as, handling surprise removal).
- Added power management features such as USB Selective Suspend.
In addition, UWP applications can now use the APIs provided by the new Windows.Devices.SerialCommunication namespace that allow apps to talk to these devices.
Usbser.sys installation
Load the Microsoft-provided in-box driver (Usbser.sys) for your Communications and CDC Control device.
Note
If you trying to install a USB device class driver included in Windows, you do not need to download the driver. They are installed automatically. If they are not installed automatically, contact the device manufacturer. For the list of USB device class driver included in Windows, see USB device class drivers included in Windows.
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Windows 10
In Windows 10, a new INF, Usbser.inf, has been added to %Systemroot%Inf that loads Usbser.sys as the function device object (FDO) in the device stack. If your device belongs to the Communications and CDC Control device class, Usbser.sys is loaded automatically.You do not need to write your own INF to reference the driver. The driver is loaded based on a compatible ID match similar to other USB device class drivers included in Windows.
USBClass_02
USBClass_02&SubClass_02
- If you want to load Usbser.sys automatically, set the class code to 02 and subclass code to 02 in the Device Descriptor. For more information, see USB communications device class. With this approach, you are not required to distribute INF files for your device because the system uses Usbser.inf.
- If your device specifies class code 02 but a subclass code value other than 02, Usbser.sys does not load automatically. Pnp Manager tries to find a driver. If a suitable driver is not found, the device might not have a driver loaded. In this case, you might have to load your own driver or write an INF that references another in-box driver.
- If your device specifies class and subclass codes to 02, and you want to load another driver instead of Usbser.sys, you have to write an INF that specifies the hardware ID of the device and the driver to install. For examples, look through the INF files included with sample drivers and find devices similar to your device. For information about INF sections, see Overview of INF Files.
Note
Microsoft encourages you to use in-box drivers whenever possible. On mobile editions of Windows, such as Windows 10 Mobile, only drivers that are part of the operating system are loaded. Unlike desktop editions, it is not possible to load a driver through an external driver package. With the new in-box INF, Usbser.sys is automatically loaded if a USB-to-serial device is detected on the mobile device.
Windows 8.1 and earlier versions
In Windows 8.1 and earlier versions of the operating system, Usbser.sys is not automatically loaded when a USB-to-serial device is attached to a computer. To load the driver, you need to write an INF that references the modem INF (mdmcpq.inf) by using the Include directive. The directive is required for instantiating the service, copying inbox binaries, and registering a device interface GUID that applications require to find the device and talk to it. That INF specifies 'Usbser' as a lower filter driver in a device stack.
The INF also needs to specify the device setup class as Modem to use mdmcpq.inf. Under the [Version] section of the INF, specify the Modem and the device class GUID. for details, see System-Supplied Device Setup Classes.
For more information, see this KB article.
Configure selective suspend for Usbser.sys
Starting in Windows 10, Usbser.sys supports USB Selective Suspend. It allows the attached USB-to-serial device to enter a low power state when not in use, while the system remains in the S0 state. When communication with the device resumes, the device can leave the Suspend state and resume Working state. The feature is disabled by default and can be enabled and configured by setting the IdleUsbSelectiveSuspendPolicy entry under this registry key:
To configure power management features of Usbser.sys, you can set IdleUsbSelectiveSuspendPolicy to:
'0x00000001': Enters selective suspend when idle, that is, when there are no active data transfers to or from the device.
'0x00000000': Enters selective suspend only when there are no open handles to the device.
That entry can be added in one of two ways:
Write an INF that references the install INF and add the registry entry in the HW.AddReg section.
Describe the registry entry in an extended properties OS feature descriptor. Add a custom property section that sets the bPropertyName field to a Unicode string, 'IdleUsbSelectiveSuspendPolicy' and wPropertyNameLength to 62 bytes. Set the bPropertyData field to '0x00000001' or '0x00000000'. The property values are stored as little-endian 32-bit integers.
For more information, see Microsoft OS Descriptors.
Develop Windows applications for a USB CDC device
If you install Usbser.sys for the USB CDC device, here are the application programming model options:
Starting in Windows 10, a Windows app can send requests to Usbser.sys by using the Windows.Devices.SerialCommunication namespace. It defines Windows Runtime classes that can use to communicate with a USB CDC device through a serial port or some abstraction of a serial port. The classes provide functionality to discover such serial device, read and write data, and control serial-specific properties for flow control, such as setting baud rate, signal states.
In Windows 8.1 and earlier versions, you can write a Windows desktop application that opens a virtual COM port and communicates with the device. For more information, see:
Win32 programming model:
.NET framework programming model: