Medion akoya e6240t broken?

Wanted to ask what's going on with me, because he no longer opens programs and calls no more e-mails, I also don't have Windows 10 because he always shows an error message from Windows 8 to Windows 10, then I have to go back there. This laptop is about six years old and it has not been used too often. You guessed what could be broken

Back up your data and install Windows 10 manually is easy

It still doesn't work and the laptop is still junk

Install Windows 10 manually, not via updates