Some users installing or upgrading to Windows 10 experienced the theKMODE_EXCEPTION_NOT_HANDLED Blue Screen of Death (or commonly known as BSOD) error. This error can be due to different types of things, ranging from software to driver issues. When you experience this BSOD error while trying to install Windows 10, it will prompt you to restart your computer every single time you experience it. In most cases, you will also not be able to proceed with the Windows 10 set-up.
Error CausesThe “KMODE_EXCEPTION_NOT_HANDLED” error is normally caused by:
You won’t be able to successfully upgrade or set up Windows 10 if you continue to encounter this BSOD error. Note that this error will always prompt your computer to restart every time it happens, preventing you from completing the Windows 10 set-up.
If you’re not tech-savvy or not capable of debugging this issue, it’s highly advisable to proceed with the basic troubleshooting techniques available in this link.
After troubleshooting, below you’ll find a few solutions to rectify the issue.
Two common causes of the KMODE_EXCEPTION_NOT_HANDLED issue are hardware incompatibility and faulty device driver or system service.
If you experience this error, check first if any of your newly installed hardware is compatible with Windows 10. You can find the required hardware for Windows 10 from this link.
If all your hardware is compatible with Windows 10, you might need to check the device driver or system service. Review the bug check message. If any of the drivers you have is listed in the message, either disable or uninstall them before upgrading or setting up Windows 10.
You might also find it useful to check the System Log available in the Event Viewer for other error messages that can help you figure out the driver or device that’s causing the error. Running hardware diagnostics can also be useful.
If you’re upgrading Windows 10 from Windows 7 or Windows 8.1, you might need to disable or uninstall the software first.
First, try uninstalling your Antivirus utility before starting the upgrade. Restart a few times before starting the Windows 10 installation.
If you’re upgrading using the Windows 10 update, make sure that you disconnect from your Wi-Fi or Internet LAN (Ethernet) connection as soon as the download reaches 100% before attempting to start the set-up.
Other users also reported that the cause of the KMODE_EXCEPTION_NOT_HANDLED issue is BitDefender. If this is what happened in your case, it will show in the error message such as KMODE_EXCEPTION_NOT_HANDLED (bdselfpr.sys). Users reported that a common solution for this is renaming the file. In the case of BitDefender, try renaming it to bdselfpr.s__. However, make sure to do this cautiously. Sometimes, renaming a file will even do more damage than good.
If you’re connected to any general USB devices (such a smart card reader), disable it. If your computer is connected to other external devices, disconnect all of them. Examples of this include gaming controllers, printers, external hard disk, USB keys, and other non-essential devices).
Other troubleshooting steps include:
If you still experience the error after doing the methods above, you might want to try a powerful and trusted automated tool to fix the job.

“Not enough USB controller resources. The controller does not have enough resources for this device.”To fix this error, here are some guidelines you can check out. Make sure to follow them carefully.
Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.
Stop 0x00000050 is an error code that is popularly known as the Blue Screen of Death (BSoD) error. This error occurs when Windows crashes on your system. Stop 0x00000050 error is displayed in a blue screen which is why it is called the BSoD error.
The error message appears in the following form:
Stop 0X00000050 (parameter1, 0, parameter3, parameter4)
PAGE_FAULT_IN_NONPAGED_AREA”
However, the parameters within the Stop 0x0000005 error message sometimes vary depending on your PC configuration.
Error CausesThe most common causes of the Stop 0x0000005 error are:
Whatever the cause may be, the Stop 0x00000050 error message is alarming and should be fixed at the earliest as it indicates major system stability problems that can often lead to data loss and system corruption.
To fix and repair the Stop 0x0000005 error you don’t always have to hire an IT professional. In fact, fixing this error is quite easy and you can do it yourself regardless of whether you have a good know-how of computers or not.
So, let’s get started! Here are some the easy DIY solutions to fix the Stop 0x0000005 error:
Sometimes this error may occur due to a temporary issue like overheating of the computer components. When this happens all you need to do is switch off the computer and allow the components to cool down. Try starting up your computer after a couple of hours. If the blue screen of death does not occur again, then this means there is nothing to worry about and the problem is resolved.
However, if the error appears again on your screen, then you need to try something else to solve and fix this error on your PC. If the cause of the error is a faulty device driver, then it is advisable to disable and remove it. Try updating the latest version of the faulty device driver. Using updated software helps ensure your PC keeps running smoothly.
If the cause of the Stop 0x0000005 error code is your system's exposure to viruses and spyware, then you must immediately download a powerful antivirus program. After you download it, scan for viruses on your system. Once the scanning is complete, you will see a scan report showing viruses on your PC. Delete all of them and click on repair.
Furthermore, you can also add more RAM to prevent and fix the Stop 0x0000005 error message on your computer. This solution is suitable when you try to run a program on your PC and you get this error message.
“Updates failed There were problems installing some updates, but we’ll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: 2018-07 Cumulative Update for Windows 10 Version 1803 for x64-based Systems (KB4345421) – Error 0xca00a000”This kind of Windows Update error pops up when Windows has missed installing one of the cumulative updates needed or when there is some problem with the driver that won’t let the installation of the updates push through. There are also instances when the system files are modified with incorrect permission that may result in the Windows update error 0xca00a000. Thus, you need to fix the trusted installer permission as well as resolve the issue with the driver. To do these things, you need to follow the options laid out below.
SC config trustedinstaller start=auto
net stop wuauserv net stop bits
net start wuauserv net start bitsSince the folder has already been flushed, it will be populated afresh the instant your restart your computer and open Windows Update.
EasyDocMerge Toolbar is a Browser Hijacker for Google Chrome. Usually, such browser extensions are installed without your knowledge. These types of Browser Hijackers are often the cause of many problems while surfing the Internet. The most common problems are unwanted pop-ups, underlined words, additional ads, sponsored links, to generate web traffic and earn revenue of the advertising networks by gathering the users browsing data and sending it back to the Mindspark ads network.
When installed this extension will hijack your home page setting it to MyWay.com, it will also change your new tab page to EasyDocMerge (Powered by MyWay.com Search).
DownSpeedTest is a Browser Toolbar Extension for Google Chrome that allows users to test their internet speed and convert files, however this speed test does not show proper values, nor even close.
Upon installation DownSpeedTest will replace your default New Tab page with its own Search Engine “MyWay.com” or “Search.MyWay.com”. This Search Engine camouflages itself as a “Enhanced Google Search Engine”, but all it does is allow more room for easier ad injection. In the background, this extension monitors user browsing behavior and records visited links, viewed products, clicked links and time spend on websites. This information is later used for Ad targeting.
While browsing the internet with this extension enabled you will experience additional ads, sponsored content, and even pop-up ads on some occasions. Due to its information mining behavior and aggressive ad placement, DownSpeedTest had been marked as a Browser Hijacker and it is recommended for removal.