Fix Google Chrome screen flickering issue

What is Error 0x00000024?

Error 0x00000024 can be seen when you start up and a screen comes up asking which mode you would startup in. Regardless of the mode you select, it leads up to the Windows screen with the loading bar and your computer crashes from there onwards. When you press F8 in order to select the “Disable Automatic Restart On System Failure” option, that is when this error shows up:

ST0P 0X00000024 (x00190203, 0x82700550, 0xc000012, 0x00000000)

Due to this error, both Safe and Normal modes become inaccessible.

Solution

Error Causes

If you’re having this error then it is the indication of an issue with the file NTFS.sys. Further, there might also be problems with the IRP (Interrupt Request Packet) or the disk may have been corrupted. There are multiple other causes of this error, including heavy fragmentation of your hard drive or problems caused by your antivirus software.

Further Information and Manual Repair

First and foremost, you are suggested to run Chkdsk. In order to do this, you have to enter your BIOS and select CDROM as your primary booting device. Now follow the below-mentioned steps:

1. Insert your Windows XP installation CD into the CDROM and reboot your PC.
2. Press any key to proceed with the boot from CD when you are prompted to do so.
3. When the Windows XP setup menu shows up, hit the “R” key to proceed with repairing Windows.
4. If there is only one Windows installed on your computer then hit the “1” key and proceed by pressing enter. If there are more than two Windows then hit the number which is associated (according to the screen you are viewing) to the Windows you want to repair. Usually, this is C:/Windows and associated with “1” but if that is not the case then you should simply press the number that corresponds with the windows you want to repair and proceed.
5. Now, you will see a screen that prompts you to enter your administrator password. Most people don’t have an admin password and in that case, you should simply hit enter and you’d be good to go. If you do have an administrator password, however, then you should type it in, hit enter, and proceed.
6. When the DOS prompt shows up, type in chkdsk/f and hit return.

If you see no improvement in solving Error 0x00000024, and the problem keeps persisting, then you should start over. But this time you should type sfc/scannow instead of chkdsk/f and hit return. There are a few other complex methods that you can try as well but this is the most recommended procedure as it is easier, quicker, and most likely to fix the error.

Although it’s easy to set up wired printers in most cases and they have their charm, you don’t have to be around the printer if you are connected to the same network. So in this post, you will be guided on how you can install and set up a wireless printer on your Windows 10 computer. The idea here is to ensure that your Wi-Fi printer and your Windows 10 computer are connected on the same network and to do that, you need to carry out the following steps:

• You have to connect the printer to the Wi-Fi network.
• You have to add the printer or scanner to Windows 10.
• You have to install the printer software.
• You have to change the default printer.
• And troubleshoot the printer.

For more details, follow the instructions below.

Step 1: Connect your printer to the Wi-Fi network. In this step, you need to turn on your printer and look for the option to connect to a Wi-Fi network. Note that the step to connect to the Wi-Fi network depends on what kind of printer you use as well as its OEM since there will be a user interface or a Wi-Fi button that will get the job done for you. Once your printer is connected to the Wi-Fi network, you need to keep it turned on until the setup is completed. Step 2: Next, add a printer or scanner to Windows 10

• Since you’re already connected to the Wi-Fi network, you now have to go to Settings > Devices > Printers & scanners.
• From there, click on the Add a printer or scanner option.
• After that, the scanning process will begin as Windows 10 looks for the printer and once it finds it, it will display the printer in the result.
• Choose the Wi-Fi printer from the results and click on the Add device option. Once you click this option, Windows will install the drivers via Windows 10 update. Note that this process will apply to all the printers – connected, wireless, and so on.

Step 3: You have to install a printer software In this step, you need to use the driver software from the OEM even though the default printer software works since in most cases, the driver software from OEM works better compared to the default ones and offers much better functionality like ink-saving modes, and many more. Step 4: You now have to change the default printer After installing the printer software, you now have to set or change the default printer in your computer. If you have not installed any printer, the default printer in Windows is the one that saves the files. Now since you have already installed your printer, all that’s left for you to do is to change the default printer of Windows 10 to the one you installed earlier. To do that, follow these sub-steps:

• Go to Settings and navigate to Devices > Printers & scanners.
• From there, check the checkbox labeled, “Let Windows manage my default printer” if there are many printers. This will recommend you to use the most used printer. But if you don’t want to switch to the most used printer, then uncheck the checkbox.
• Once done, click on the printer you want to set as the default one and go to Manage, and then click on the Set as default button.

Step 5: If you have any issues with your newly installed printer, then you need to troubleshoot it One of the first basic troubleshooting you can perform to resolve the printer issue is running the Printer Troubleshooter. This built-in troubleshooter can detect and automatically fix the problem for you. To use it, follow these steps:

• Tap the Win + R keys to open the Run dialog box.
• Next, type “exe /id PrinterDiagnostic” in the field and click OK or hit Enter to open the Printer Troubleshooter.
• Then click the Next button and follow the next on-screen instructions to fix the issue with the printer.

It is a fact that Blue Screen of Death errors can give you a headache for you will have a hard time fixing it as it is one of the most difficult errors you can encounter on your Windows computer. One of these BSOD errors is the UNEXPECTED KERNEL MODE TRAP error. If you receive this kind of error then it means that the operating system was not able to catch a trap or an exception generated by the CPU. This BSOD error has an error code 0x00000007F and indicates that the Intel CPU generated a trap that the kernel failed to catch. One of the most likely causes is hardware failure due to faulty memory. Aside from this cause, you also have to track down other probable causes for this problem like corrupted system files, incompatible drivers or programs, faulty hardware, and even dusty components, and so on. To fix the UNEXPECTED KERNEL MODE TRAP BSOD error, here are some suggestions that might help.

Option 1 – Uninstall the programs you installed recently

Chances are, some programs that you just installed might be the one that’s causing the BSOD error. Thus, you need to uninstall the program to resolve the problem.

• In the search box, type in “control” and then click on Control Panel (desktop app) among the search results.
• After that, select Programs and Features from the list which will give you a list of all the programs installed on your computer.
• From there, look for the concerned program and select it and then uninstall it.

Note: If you have downloaded the app from the Windows Store, you can simply right-click on it from the application list and then uninstall it. In addition, you might also want to check the hardware components of your computer that might not support the operating system itself. You can disconnect all the external devices like USB drives, scanners, printers, etc., and then reboot your PC. After that, add the devices again one after the other and check if the BSOD error is now fixed or not. Moreover, you can also perform a clean boot to make things easier for you.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)

Option 2 – Update your device drivers

• Tap the Win + R keys to launch Run.
• Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. Look for the device driver you and then select either “Update driver” or “Uninstall device”. And if you find any “Unknown device”, you need to update it as well.
• Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
• If you have chosen to uninstall the driver, follow the screen options to complete the process and then restart your PC.
• Connect the device and Scan for hardware changes – you can see this option under Device Manager > Action.

Option 3 – Use the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like UNEXPECTED KERNEL MODE TRAP. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 4 – Run the Windows Memory Diagnostic tool

You can use the Memory Diagnostic tool in Windows to check RAM. Before you use this tool, make sure you save all your important work.

• Tap the Win + R keys to open the Run dialog box.
• Next, type in “mdsched.exe” in the field and hit Enter to open Memory Diagnostic.
• After that, the Windows Memory Diagnostic will give out two options such as:

1. Restart now and check for problems (recommended)
2. Check for problems the next time I start my computer

• Select any of the given options. After that, your computer will restart and check for memory-based issues upon the restart. If there are any issues, it will automatically them.

Option 5 – Disable Memory caching in the BIOS

You can also disable memory caching in the BIOS to fix the UNEXPECTED KERNEL MODE TRAP error.

• Open the BIOS Setup screen.
• Next, go to Advanced > Cache Memory and then disable it.
• Tap the F10 key to save the changes made and restart your computer.

Option 6 – Run System File Checker

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow
• Restart your computer once the scan is completed.

Option 7 – Clean your hardware components for dust

Cleaning your computer’s hardware components for dust might also help in resolving the UNEXPECTED KERNEL MODE TRAP error. Make sure to use a soft cloth in cleaning the hardware as well as a small blower. Moreover, ensure that you do not damage any parts with moisture or cause harm to any circuits while you’re at it.

Windows 11 is getting adopted more and more each day, and how more and more users are installing it some smaller bugs show up. One of the things that have manifested lately is that in some cases installation assistant is not working throwing error 0x8007007f at you while you try to finish the update of Windows. If you are one of the users that are experiencing this kind of annoyance, we have a solution for you. Follow this guide as presented and repair this annoying error.

Run installation assistant as administrator

This is the most simple solution that can solve problems right away and it is advised to be tried first.

1. Download standalone Installation assistant installer from Microsoft website here
2. Go to the location where you had the file downloaded
3. Right-click on file
4. Click on Run as administrator
5. On the permission box, click YES

Disable antivirus and/or firewall software

Antivirus or firewall software can sometimes interfere with Windows’s update and prevent for any reason download or installation of files they consider not safe. If the first solution has not provided success turn off your antivirus or firewall software and try again to install updates by running them as administrator. Now, how many different antivirus or firewall applications are unique pieces of software it would take too much time to cover all of them but usually and most commonly if you right-click on the taskbar icon of security app most of the time you will have either option to open it and close it or simply just to snooze it for some time.

Set the compatibility

If you are still having issues with installing updates try setting compatibility mode for the installer.

1. Download standalone Installation assistant installer from Microsoft website here
2. Go to the location where you had the file downloaded
3. Right-click on file
4. Click on properties
5. Go to the Compatibility tab
6. Click on Run this program in compatibility mode for:
7. Choose Windows 7
8. Click on APPLY
9. Run installer

Run SFC scan

If you are still facing installation issues there is a high chance there is something wrong with Windows system files. Luckily Windows itself has a built-in tool to address these issues and fix them.

1. Open command prompt as administrator by pressing Start and searching for the command prompt and then on right-clicking on run as administrator
2. Once the command prompt opens type in SFC / SCANNOW and press ENTER
3. Wait for the whole process to complete and then restart your system

Recently, a lot of users reported having an issue with Windows Update. According to these users, they got an error message saying, “Windows Update components must be repaired” after they run the Windows Update troubleshooter. So if you are also facing this issue then you’ve come to the right place as this post will guide you in fixing this problem. There are various suggestions you can check out to fix this problem – you can try running the Windows Update troubleshooter again but this time, in a Clean Boot State or you could also run System File Checker or the DISM tool to repair corrupted Windows Update files or reset the Windows Update components. For more information, refer to the given options below.

Option 1 – Run the Windows Update troubleshooter in a Clean Boot State

Repairing the “Windows Update components must be repaired” error is not that complicated. One of the things you can try is to run the Windows Update troubleshooter again but this time, in a Clean Boot State. Refer to the steps below to get started.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• Now try to run the Windows Update troubleshooter again and see if the error is fixed or not.

Option 2 – Try to run System File Checker

If the Windows Update troubleshooter still failed to fix the problem, you can run System File Checker instead. It is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 3 – Run the DISM tool

Running the DISM Tool helps in repairing the Windows System Image as well as the Windows Component Store in Windows 10. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Note: If it happens that the Windows Update client is broken, you need to run the following command to repair it then restart your PC and click on Update once again.

DISM.exe /Online /Cleanup-Image /RestoreHealth /Source:C:RepairSourceWindows /LimitAccess

Option 4 – Delete the contents in the Software Distribution folder and Catroot2 folder

You can also delete the contents in both the Software Distribution and Catroot2 folders as it could potentially fix the “Windows Update components must be repaired” error.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net start cryptSvc net start bits net start msiserver

• After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
• Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.

After resetting the SoftwareDistribution folder, you need to reset the Catroot2 folder to restart the services you just stopped. To do that, follow these steps:

• Type each one of the following commands.

net start wuauserv net start cryptSvc net start bits net start msiserver

• After that, exit Command Prompt and restart your computer, and then try to run Windows Update once more.

As you know, the Windows 10 operating system has support for a dedicated high-end graphics processor that brings in capabilities inside to support Graphics Cards from NVIDIA or AMD. This helps the operating system to function in a much better way by segregating the graphics-intensive operations from the CPU to a dedicated processor. However, there are times when it also experiences some issues that lead to some errors like the “Failed to create a graphics device” error. It is possible that your computer has more than one screen or graphics card which is why you’re getting this error. To fix it, you need to try reinstalling DirectX or reinstall the Graphics Card driver. You could also try to manually check the hardware or power cycle of your computer. To start troubleshooting the “Failed to create a graphics device” error, follow the given suggestions below.

Option 1 – Try running the DirectX Diagnostic Tool

Since the error has something to do with the DirectX Graphics APIs, you can run the DirectX Diagnostic tool to resolve the problem.

Option 2 – Try updating or re-installing DirectX

If the DirectX Diagnostic tool didn’t work, you can try to update or reinstall DirectX instead. This can help in fixing the problem because when you reinstall or update DirectX, it will replace the incompatible or corrupted components of DirectX from your computer.

Option 3 – Update or reinstall the Graphics card drivers

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in MSC into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

Option 4 – Try to physically check the hardware of your computer

You might also want to check the physical status of the hardware in your computer. You can clean the dust off the hardware components like the Graphics Card of the computer. In doing so, you have to use a small blower or you could also use a soft cloth and run the components gently. Make sure that you don’t damage any parts with moisture or cause harm to any circuits while you carry out this task.

Option 5 – Try to power cycle your computer

You could also try to power cycle your computer to fix the error. To do that, you have to turn off your computer in a way that the power is completely cut off and all the fresh configurations of files are loaded when your computer is booted up. The first thing you have to do is to shut down your computer and if you are using a laptop with a removable battery, you must remove the battery for a couple of minutes before you plug it back in and boot your laptop. On the other hand, if you are using a desktop computer, press and hold the power button until the CPU goes off and take out the power cable for a minute or so and then plug it back in. Boot your computer and see if the error has been resolved.

Recently, a number of users reported seeing plain white icons on their “.docx” files instead of the Word icon. This kind of issue is mostly caused by a conflict with the default program settings in Windows which is why you may not see any Microsoft Word icon on your .docx files. So if you suddenly find that the Microsoft Word icon is either blank or missing and does not show properly on .doc and .docx document files of Office on your Windows 10 computer, then you can check out the potential solutions outlined below. Before you proceed, you can try to restart your computer as there are instances when a simple system restart can resolve some issues like this one. However, if it does not help, create a System Restore point first. This is to ensure that you can always undo the changes you are about to make in case something goes wrong. Once you have that covered, proceed to the following options.

Option 1 – Try to configure .docx files to open with “winword.exe”

You can try configuring the .docx files to open with the winword.exe in order to fix the problem.

• Right-click on a .docx file and select the “Open with…” option.
• After that, if a prompt appears with a message saying, “How do you want to open this file”, select the “More apps” option to proceed.
• Next, scroll down and check the checkbox that says, “Always use this app to open .docx files” option.
• Then click on the “Look for another app on this PC” link and choose the WINWORD.exe application from one of the following paths based on the installed Office version in your computer and click Open:
  • Word 2016 (64-bit): C:/Program Files/Microsoft Office/root/Office16
  • Word 2016 (32-bit): C:/Program Files (x86)/Microsoft Office/root/Office16

• Now check if you can now see the Word icon on the .doc or .docx files.

Option 2 – Try changing the default Word icon via Registry Editor

• Tap the Win + R keys to open the Run utility.
• Then type “Regedit” in the field and hit Enter to open the Registry Editor.
• Next, navigate to this path located in the left pane: HKEY_CLASSES_ROOTWord.Document.12DefaultIcon
• From there, double click on the default value at the right pane and based on the Word version you are using as well as the architecture (32 bit or 64 bit) and then copy-paste the corresponding value in the Value data box:
  • For Word 2016 (64-bit) keep it as C:/Program Files/Microsoft Office/root/Office16/wordicon.exe,13
  • For Word 2016 (32-bit) Keep it as C:/Program Files (x86)/Microsoft Office/root/Office16/wordicon.exe,13

• Once you’re done, tap Enter and then close the Registry Editor.
• Restart your computer and see if the problem’s fixed.

Option 3 – Try to rebuild the Icon cache

You may want to rebuild the Icon cache as it could also help fix the issue.

• Tap Win + E to open File Explorer and then click Folder Options and click Views to show Hidden System Files.
• After that, go to C:Users%username%AppDataLocal folder and look for a file named Iconcache.db and delete it.
• Next, go to C:Users%username%AppDataLocalMicrosoftWindowsExplorer.
• From there, look for the following files and delete them.
  • iconcache_32.db
  • iconcache_48.db
  • iconcache_96.db
  • iconcache_256.db
  • iconcache_1024.db
  • iconcache_1280.db
  • iconcache_1600.db
  • iconcache_1920.db
  • iconcache_2560.db
  • iconcache_exif.db
  • iconcache_idx.db
  • iconcache_sr.db
  • iconcache_wide.dd
  • iconcache_wide_alternate.db
• Restart your computer. This will purge and rebuild the icon cache.

Option 4 – Try fixing Office apps

Fixing the Office apps can help you resolve the Word icon issue. All you have to do is open Settings > Apps. From the app list, look for the Microsoft Office Desktop apps and select it and then click on the Advanced options and click Fix. After that, wait until the process is completed and restart your PC. However, if the problem still persists, repeat the steps again but this time, click on Reset instead of Fix.

Option 5 – Try to repair Office Installation

If the options given above didn’t work, you can try to repair the Office installation and see if it can fix the problem.

• Open Control Panel and click on Programs and Features.
• Next, right-click on the Office program that you want to repair which in this case is, Word.
• Select Change and click Repair > Continue. After that, Office will start to repair Microsoft Word.
• Wait until the process is done and then reboot your computer.

Windows Updates are important and though it is not recommended for any user to turn it off completely, there are just some remote cases where you might have to keep it off. Such are the cases when you want to use your Windows 10 computer just for gaming and you don’t want Windows Update to interrupt it because of some messy driver update. A lot of users have in fact want to disable Windows 10 updates completely. Although you can always use the built-in option to delay Windows Updates or make Windows 10 inform you before downloading the updates, however, there are instances when Windows 10 Update may enable itself even after you turn it off or delay it. To resolve this issue, read on. You may have to disable the Windows Update Medic Service if Windows Update just keeps on starting and turning itself back on even after turning it off in Windows 10 on top of turning off the Automatic Windows Update Service or wuauserv and setting a Guest Log on. To get started, refer to the instructions prepared below.

Option 1 – Change the Log on account of the Windows Update Service

It appears that one of the major upgrades in Windows 10 has made sure that Windows 10 enables back the Windows Update Service all on its own even if the service has been set to disable by the administrator. And that’s the important thing here, Windows 10 uses admin credentials in order to ensure that it can re-enable the Windows Update Service each time it is in a disabled state. So in this fix, you can prevent the Windows Update Service from changing the account credentials used to run it.

• Tap the Win + R keys to open the Run prompt with admin privileges.
• Then type “services.msc” and click OK or hit Enter to open Services.
• After that, locate the Windows Update Service from the list. Once you see it, double-click on it to open its Properties.
• From there, click the Stop button to stop the service.
• Next, go to the Log On tab and select the “Log on as ‘Guest” option which is the Guest account.
• Just leave the password blank and then click Apply to save the changes made.

Note: After you made the changes, every time the Windows 10 Update Service attempts to run, you might get an error message that states, “Windows could not start the Service” or “The account specified for this service is different from the account specified for other services running in the same process”. This is what makes this fix a lot better compared to other software or batch file to keep turning off the Windows Update Service. You did not exactly disable the service but you just changed the account used to run the Windows Update service and since there is a password, the service never really works. On the other hand, Windows Defender can’t be stopped using this trick as it will keep getting an update.

Option 2 – Try to disable the Windows Update Medic Service using the Windows Update Blocker

Aside from changing the Log on account of the Windows Update Service, there is also another way you can prevent the service from enabling itself after you disable it. This alternative you can use is the Windows Update Blocker. This is a new Windows Service that was introduced in the recent Windows 10 versions. You can use this service to disable the service.

Libmysql.dll is missing or not found error appears in Windows when the user is trying to open and run the application. In this guide, we will offer you solutions on how to fix and remove this annoying error.

1. Check recycle bin

   Some applications or purely by accident itself libmysql.dll gets deleted. If you have not turned recycle bin off go to it and check to see if the file is by any chance there. If you find it, right-click on it, choose restore, the error will be gone.

2. Update drivers

   Press ⊞ WINDOWS + X to open the Windows menu and click on Device manager In device manager locate device which has alert mark next to it Right-click on it and choose update driver Reboot your computer

3. Run SFC scan

   Press ⊞ WINDOWS + X and choose command prompt (admin) In command prompt type in sfc /scannow and press ENTER wait for the operation to complete and Reboot your system

4. Reinstall application

   if you are getting an error only on one application or an error has started to appear after the installation of a particular application go to Windows applications, uninstall it and then install it again. There is a chance that the file has been corrupted during the installation process.

There are not many applications for creating mind maps, even fewer that are completely free, so it is with great pleasure to present you with Freeplane. Freeplane is mind mapping, Knowledge Management, and Project Management software completely free and open source. You can it here: https://sourceforge.net/projects/freeplane/files/latest/download

And from developers git page and I quote:

Freeplane is a free and open-source software application that supports thinking, sharing information, and getting things done at work, in school, and at home. The core of the software is tools for mind mapping (also known as concept mapping or information mapping) and using mapped information. Freeplane is written in Java using OSGi and Java Swing. It runs on any operating system that has a current version of Java installed. It can be run locally or portably from removable storage like a USB drive. We use Github only as of the main code repository, all other project parts are hosted at the source forge. So all bugs and feature requests are managed in a separate issue tracker. There is a drop-down box for selecting different types of issues. Other sources of inspiration are our new forum and old forum. Some users write their ideas there. Every contributor and every team member freely decides what task he is going to work on, but for making the best decision we can communicate our self-set goals in the above forum. It is supposed to enable early discussions and community feedback and also to motivate you and other people.

How to start hacking and contributing

People new to the project can start with implementing a new small feature or doing some refactoring or documentation and not with the bug fixing. Not all bug reports seem to be equally important, and if there are important bugs they usually get fixed by people who broke the functionality. I think you should first get there :). For internal developer discussions, there is a private mailing list. It is held private to avoid spam mails. If you want to be subscribed let us know what mail address you are going to use with it. This list is the preferred way to ask all code-related questions because they usually get answered soon and by the most competent team member. Some documentation for new developers is available in Freeplane wiki https://www.freeplane.org/wiki/index.php/How_to_build_Freeplane and also here and here. It is written for new guys and should also be maintained by the new guys to stay up to date. Looking forward to any questions and contributions, Freeplane development team