Windows xp constantly updating
System Restore has been helpful for solving Windows problems for many a year now, but it happens to be quite well hidden in Windows 10.
If Windows' own troubleshooter doesn't work (see step 4) then you can try and carry out the same process yourself manually: stopping the Windows Update service, deleting the temporary files it's created, then starting Windows Update again.
It's a little more involved, but it's not difficult to do.
First, boot up into Safe Mode (see step 5), then access to the command prompt, the most basic of Windows interfaces: right-click on the Start menu, choose Command Prompt (Admin), and a text box should appear.
Operating system updates are a necessary evil, like taxes and car MOTs: they can be a real chore, but they're essential for a happy and peaceful life.
You might not care for Windows updates, but they keep you protected, squash nasty bugs and generally keep the OS running as smoothly as possible.