The following is a list of the device identification string formats that the PCI bus driver uses to report hardware IDs. When the Plug and Play (PnP) manager queries the driver for the hardware IDs of a device, the PCI bus driver returns a list of hardware IDs in order of increasing generality. Expand the Universal Serial Bus controllers list, plug in the USB hub and remove it again. By this, you will spot the entry related to the USB hub. Right-click the entry, and select uninstall. Follow the prompts to delete the driver. After this, follow step 1 to reboot the computer again. Refresh all USB drivers completely.

Important

You can find a list of known IDs used in PCI devices at The PCI ID Repository. To list IDs on Windows, use devcon hwids *.

The following is a list of the device identification string formats that the PCI bus driver uses to report hardware IDs. When the Plug and Play (PnP) manager queries the driver for the hardware IDs of a device, the PCI bus driver returns a list of hardware IDs in order of increasing generality.

Where:

• v(4) is the four-character PCI SIG-assigned identifier for the vendor of the device, where the term device, following PCI SIG usage, refers to a specific PCI chip. As specified in Publishing restrictions, 0000 and FFFF are invalid codes for this identifier.

• d(4) is the four-character vendor-defined identifier for the device.

• s(4) is the four-character vendor-defined subsystem identifier.

• n(4) is the four-character PCI SIG-assigned identifier for the vendor of the subsystem. As specified in Publishing restrictions, 0000 and FFFF are invalid codes for this identifier.

• r(2) is the two-character revision number.

• c(2) is the two-character base class code from the configuration space.

• s(2) is the two-character subclass code.

• p(2) is the Programming Interface code.

Examples

Note

In these examples, you'll need to replace the placeholder SUBSYS values of 00000000. As mentioned earlier, 0000 is invalid for the v(4) and n(4) identifiers.

The following is an example of a hardware ID for a display adapter on a portable computer. The format of this hardware ID is PCIVEN_v(4)&DEV_d(4)&SUBSYS_s(4)n(4)&REV_r(2):

PCIVEN_1414&DEV_00E0&SUBSYS_00000000&REV_04

The following is the hardware ID for the display adapter in the previous example with the revision information removed. The format of this hardware ID is PCIVEN_v(4)&DEV_d(4)&SUBSYS_s(4)n(4).

PCIVEN_1414&DEV_00E0&SUBSYS_00000000

Note

In Windows 10, some IDs that previously appeared in the Hardware IDs list now appear in the list of Compatible IDs.

Reporting compatible IDs

The following is a list of the device identification string formats that the PCI bus driver uses to report compatible IDs. The variety of these formats provides substantial flexibility to specify compatible IDs. The PCI bus driver constructs a list of compatible IDs based on the information that the driver can obtain from the device. When the PnP manager queries the driver for the compatible IDs of a device, the PCI bus driver returns a list of compatible IDs in order of decreasing compatibility.

Where:

• The definitions of the following fields in a compatible ID are identical to the definitions of the corresponding fields that used in a hardware ID: v(4), r(2), c(2), s(2), and p(2).

• d(4) in the DEV_d(4) field is the four-character vendor-defined identifier for the device.

• d(4) in the DT_d(4) field is the four-character device type, as specified in the PCI Express Base specification.

For the example of a display adapter on a portable computer, any of the following compatible IDs would match the information in an INF file for that adapter:

Summary :

When your system can’t identify the connected device, you may receive an error message saying “The drivers for this device are not installed. (Code 28)”. What is this error? What could you do to deal with this error code? This post from MiniTool will show you the answers.

The Drivers for This Device Are Not Installed. (Code 28) Explained

As a Windows user, you may often encounter a problem when your system does not identify the connected device. In this case, Device Manager contents an unknown device and you will see a message in its Device status box: The drivers for this device are not installed. (Code 28).

Windows can show the device status in Device Manager. But, do you know how to check a device’s status in Device Manager? There is a guide in this post.

Code error 28 is a device manager error code that mainly happens to video card, sound card or USB devices. This error can also occur on a 32-bit or 64-bit version of Windows 7/8/10 on an Ethernet Controller or Bluetooth.

Once this error appears on your computer, the USB device, Realtek HD audio, Video Controller or many other devices in device manager will show you that the drivers for this device are not installed.

Worse, your computer may occasionally freeze for a short time, or Windows 10 may be slow to respond to a mouse or keyboard. All of these can have a huge impact on your computer use.

More importantly, this error is actually a driver problem, as you can see from the error message above. In most cases, this could be due to outdated, missing or corrupted drivers.

Thus, based on all the facts about this device manager error, this post will focus on how to fix the code 28 error which lead to the drivers for this device are not installed.

How to Fix the Drivers for This Device Are Not Installed Code 28?

If you wonder “how do I fix error code 28”, keep reading.

Method 1: Uninstall and Reinstall the Device Driver

You can conclude from “The drivers for this device are not installed. (Code 28)”, so it is easy to deal with this error: you can try uninstalling and reinstalling the device driver at the beginning. Here is a quick guide on how to fix this error. Here select uninstall Base system device for a reference.

Step 1: Right-click the Start menu and select Device Manager to open it.

Step 2: Once the Device Manager window opens, find Other Devices and click it to expand it.

Step 3: Under Other Devices, navigate to Base system device. Right-click it and choose Uninstall to uninstall it. Then, Windows 10 will start to search for the latest Base System Device driver for t your computer.

Step 4: Now, restart your computer. Windows 10 will finish to reinstall the online drivers for you.

However, in most cases, Windows 10 cannot help you find the compatible or latest Base System Device or any other device driver. Thus, under this circumstance, you can try to search for the right device driver from the official site to fix “The drivers for this device are not installed. (Code 28)”.

Method 2: Update the Device Driver

If you know which device causes this error or you even have its manufacturer’s CD with appropriate drivers to install, this method will be useful to you. All you need to do is to install drivers on your computer.

If you don’t have such CD, you can try to download the latest drivers from the manufacturer’s official website. Follow the instructions below.

Step 1: Download the latest drivers manually from the manufacturer’s official website.

Step 2: Run setup.exe or other executable files that you’ve downloaded.

Step 3: If there is no executable file in your downloads, run Device Manager to find the needed device in the list.

Drivers PSI USB Devices

Step 4: Right-click it and choose its Properties. Then, go to the Driver tab and click Update Driver.

Drivers Psi Usb Devices Windows 10

Step 5: After that, follow the installation wizard’s instructions and install the needed drivers.

Bottom Line

Drivers Psi Usb Devices Free

In conclusion, this post has shown you how to fix “The drivers for this device are not installed. (Code 28)”. If you encounter this error, try the methods above.