I guess that my problem started after downloading a crack for a video format converter program. Although the site from which I downloaded the file is usually reliable, it may have contained a Trojan.
No one sent me a link or a suspicious email. I downloaded the file personally at my own risk. It was a big mistake for which I unfortunately paid dearly.
Dump windows asap. Windows itself is dangerous and a malware enabler.
Use a linux distribution. There are many free video edit/converter software in the linux ecosystem.
I don't think Windows is that bad. The popularity of Windows users is much more than Linux because it is easy to use, so most hackers dedicate their malware to Windows.
The crack that I downloaded was detected by Windows Security and blocked immediately, but I disabled the protection for the crack to work. If you do not disable the protection, Windows will not allow it to run and the crack will be deleted immediately.
Of course, Linux is much better in terms of security and protection, but frankly, the main problem is not in Windows, but in downloading the crack files and giving them permission to work.
When you use a linux distribution, you don’t look for a crack to pirate software. You look for freeware instead and there are plenty.
When you search video editing software on google, it will return only paid software or crippled fake freeware. That’s how they get to you.
Your goal is to get your job done for free.
Windows won’t give you that.