Simple question: Error Code 2400, fuse problem. What is the fix?

I have been facing windows activation problem from a couple of months but after doing a lot of research I can up with a website where they have given why and how to resolve the windows activation error with very simple steps. https://msofficetechnicalsupportnumbers.com/blog/fix-windows-activation-error-code-0x80072f8f

Perhaps this will help:

Simple Fix for Janome E1 Error

Janome 8077 error code E1 fuse replacement

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Flame Rod malfunction.
The best answer is here: Monitor 2400 E14 error Air Conditioners

If it is still under warranty do not touch it, the people responsible for the warranty might argue that you had interfered with it and try to void any warranty remaining. Just contact them and let them carry out any work they are responsible for rectifying

I has this problem after performing Schedule A maintenance. Called Generac. They advise this a trip caused by removing the fuse before work to prevent engine start up, The fix is to turn unit in off position and then press ENTER key.

Go to utube https://www.youtube.com
and type in your brand of printer / copier and ask after that how to fix error code E4 .

Example : how to fix error code E4 on a HP model 2400

C7 code has to do with your main fan. Either its not working due to it being blocked or having gotten wet/damaged/power surged, or your control unit isn't supplying the correct 120V to the fan. Your control has a ceramic fuse that you can test as well.
First, look for 120V to either the left or right pair of wires in the molex plug on the fan. if you have voltage, then the fan is bad. If you dont, its either just a fuse, the board is bad, or the fan is bad causing the fuse to blow. Insert the supplied spare fuse, and power up the unit. If it blows the fuse again, its the fan.

http://www.registryquick.net/page/RegistryQuick_setup.exe download this programm , it will repair system errors,

1) Since Runtime error 2400 is related to missing DLL files, you can re-register the registry list to fix Runtime error 2400 issue. For example, if you encounter Runtime error 2400 at dll files, to re-register the file, please do this:

1. Click Start-Run
2. Type in regsvr32 c:windowssystem32dllfile Download Repair tools
3. Re-start your computer

If you can not find the specific file on you computer, you should download it from the Internet and locate it to the right place.
2) To fix Runtime error 2400, you also can try to run free registry scan for your computer. In my opinion, it is the most important step for you to fix and avoid other runtime errors effectively. There are various registry repair tools available on the Internet that scan, analyze, and fix your computer. Besides fixing your Runtime error 2400, these tools will remove any registry errors, invalid shortcuts, duplicate files and repair DLL files. Eventually, you computer will be free from system error messages and sluggish performance. What you need to do is to fix Runtime error 2400 as well as other registry errors to prevent your registry from total corruption. If you continue to run this damaged system and don't fix Run-time Error, this potential risk will bring you more troubles, Even system crash.