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(Code 39).” Advertisements After examining and troubleshooting the USB ports using the instructions from this guide: How to fix USB device not recognized or USB not Installed problem, the USB Controller problem still existed on his laptop. The driver may be corrupted or missing. (Code 39) Object Name not found.” Drive nomenclatures are as follows: (Drive 1) ATAPI iHAS124 B (with Driver Version 10.0.10586.0, dated 6/21/2006) (Drive 2) HL-DT-ST DVDRAM GH24NSB0 (with Driver Version 10.0.10586.0, dated 6/21/2006) Attempted fixes as follows. I have a Terasic DE0-Nano Cyclone IV with built-in USB Blaster. I am using: OS: Windows 10 Pro Version: 1809 Build: 17763.316 I have tried to USB Blaster driver from Quartus II 9.1, 13.0, 13.1, 18.0, and 18.1. I have tried disabling driver signing, but, this is probably useless since I never got a.


Code 39 is a device driver error code which pops up when the Windows operating system cannot load the driver for the hardware you want to use.

This hampers your ability to use the hardware properly. The error code is almost always presented in the following format:

“Windows cannot load the device driver for this hardware. The driver may be corrupted or missing.”
Code 39

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A device driver is a software program that tells the operating system on how to control a particular hardware device. Each hardware device has a different driver.

There are separate device drivers for printers, CD-ROM readers and keyboards, to name a few.

Many device drivers are already built into the operating system. But sometimes you will need to install a new device driver when you want to use a new piece of hardware device that the operating system is not familiar with, or does not anticipate.

Regardless of whether or not the drivers are already integrated in the operating system, you may still experience code 39, typically because of the corrupted or outdated drivers.

Outdated and corrupted drivers cause hardware malfunction and failure, which trigger device driver error codes like code 39. Other causes include incorrect registry values.

Below are some of the easiest and most effective methods to resolve Device Manager error code 39 on your PC.

To follow and implement these methods, you don’t require any technical knowledge or expertise. Simply follow these instructions to fix the error right away.

Method 1 – Fix with a Simple Reboot

There is a possibility that the error code 39 is caused by some fluke within the Device Manager or your BIOS.

If that’s the reason, then a simple PC reboot can resolve the issue immediately. Therefore, before you try anything, it is advisable to restart your system.

If it works, then that is great, but if it doesn’t, then don’t worry, try other methods given below to fix this problem successfully.

Method 2 – Uninstall and Reinstall Drivers

If the error code 39 is generated due to faulty or outdated drivers, then simply uninstall and remove them and then reinstall new driver versions. There are two ways to remove faulty drivers.

Method One

  • One is, to go to the start menu, click on Control Panel, and then Add/Remove Programs.
  • Remove the program and the driver you think is causing problems. This will thoroughly remove all traces of the faulty driver.
  • To reinstall, follow the same steps but this time install the new device driver version.

Method Two

  • The other way is to go to the start menu, type Device Manager in the search bar, and then press enter to continue.
  • In the Device Manager, find and locate the problematic device.
  • After that, double click the category of device that you wish to uninstall. Let’s say, Windows is unable to load the graphics card driver.
  • This means you will have to click on the Display Adapter category in the Device Manager to uninstall the graphics card.
  • After you have successfully uninstalled, Windows will prompt you to confirm device removal.
  • Simply click OK to confirm and proceed. To activate the changes, restart your PC.
  • To reinstall, go to the Device Manager, click on the Action tab and then select the option ‘Scan for Hardware Changes.’

This method, although effective in resolving error code 39, can be time-consuming. To avoid the hassle and save time, try method 3.

Method 3 – Update Drivers Automatically with Driver Assist

Deployed with an intelligent programming system, Driver Assist is an innovative program designed to resolve device driver related problems.

It identifies all problematic drivers including corrupted drivers, outdated drivers and mis-configured drivers in seconds, then matches them with the latest and compatible versions, and updates them right away, automatically and on a regular basis.

By installing Driver Assist on your system, you can easily resolve error code 39 generated due to faulty drivers. The software is compatible with all Windows versions including Windows 7, 8, XP and Vista.

Click here to download Driver Assist to fix error code 39.

For further information you may be interested in these similar issues:

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Error Code 39 Windows 10



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[German]Users of Windows 10 may experience a nasty surprise when switching to version 1803. Drivers are no longer be loaded and return the error code 39 in the device manager – although all worked before installing the feature update. This is due to Core Isolation (HCVI), which was implemented in all versions of Windows 10 since version 1803 – and can cause the driver error on compatible machines.

Graphics Device Driver Error Code 39


The error

The error, that users are facing in Windows 10 V1803 is always the same. The driver suddenly cannot be loaded. Here is the message

Windows cannot load the device driver for this hardware. The driver may be corrupt or missing. (Code 39)

{Invalid image} Adobe reader mac mojave download.

%hs is either not intended to run under Windows or contains an error. Reinstall the program using the original installation media or contact your system administrator or software vendor for assistance. Error status 0x

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Within this German MS Answers forum post it has drastic consequences. After installing the feature update lifting the machine to Windows 10 V1803, the Intel(R) HD Graphics 3000 and its drivers no longer works. The Microsoft Basic Display Driver takes over the screen output, but only supports a resolution of 1024 x 768 pixels.

The root cause: Core isolation

Error code 39 indicates an incompatible or damaged driver. But with Windows 10 April Update there is an additional problem, which my German colleague Ingo Böttcher described in his German blog post here. Microsoft has also introduced the so-called core isolation (HVCI) in the home versions of Windows 10 V1803 (previously this was limited to the Device Guard of the Enterprise Edition, see).

HVCI isolates the kernel via the built-in hypervisor (virtualization) to protect it. However, hardware support is needed. As Ingo writes, apart from Virtualbox issues also various drivers have problems with the new HVCI featrue. However, you can control and turn off core isolation on supported machines in the Windows Defender Security Center. Within this article is a screenshot and an explanation how to turn it on – this feature isn#t supported on my test system’s hardware.

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A bug prevents disabling HVCI in GUI

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In Windows 10 version 1803, however, there is a bug that to my knowledge was not fixed until June 2018. Once an HVCI function has been activated, it can no longer be switched off via the Windows Defender Security Center (see this post). The workaround is to invoke the registry editor via Run as administrator and then navigate to the key:


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Then set the DWORD value Enabled to 0 (see also this Microsoft article) and reboot Windows 10. After that HVCI should be disabled and the old drivers (or Virtualbox) should work again.

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