Samsung Expert X40 keyboard problem

[Windows 10]

In December, my Samsung Expert X40 had an update to Windows 10, and after that, 70% of the keys no longer work. I tried everything, from keyboard options in Windows, formatting, regedit, CMD, cleaning, but nothing works. Tired, I bought a new original keyboard, and even after changing it, nothing changed. The only thing that bothers me is that when I press two "broken" keys at the same time, a random letter appears. For example: O and S don't work alone, but when I press them at the same time, O + S = H... I asked for help on reditt but no one answered, I looked on YouTube but no one teaches..

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