Мои умные друзья! Вы мне уже не раз...

My smart friends! You have helped me more than once with computer advice :) I have a new problem from Windows. I successfully updated 8k to 10k. For about a month or two everything worked more or less, 10ka really turned out to be more pleasant than 8ka. Until, after the next update, it turned on (files began to open for 5 minutes, and not only). I could not cope with glitches, I decided to do a clean reinstallation. 8ka I’m Russian. 10ku I decided to put English. Of course, I read that you need to put the same version, but I hoped - suddenly it works! It didn't work. I mean, of course, 10ka got up, but it is not activated, because the license key does not fit. I found the keys on the Internet. With one of them, my Windows successfully activated. I was delighted! Early. Exactly 24 hours later, she again demanded activation from me. I repeated the procedure - the same thing. After 24 hours, activation is no longer valid. Now the question is: is it possible to somehow activate this Windows without buying, and so that forever? And the second question - what happens if you don't activate it? In the internet they write different things. Someone says that nothing will happen - Windows will work, update, everything is top-notch, only you can't personalize it (well, you don't need to). And somewhere they write that the unactivated Windows after some time bends, and that in no case should you do this. Anyone have a similar experience? Thanks for your attention :)