Windows 10: Involuntary population of the backslash key

Hello!Over the last few days my computer randomly starts typing backslash key w/o any prompts from the keyboard or mouse.i thought that i created a sticky key by accident but i did not.it is done randomly, into password boxes, in the middle of documents. hitting escape multiple times helps.all other keys are OKi cleaned the keyboard, the key is not stuck and there is no dirt there. it was not exposed to water.Thanks in advance

:)

 

typing backslash

Backslash is there on the 8 key, I believe you click & hold ctrl key the 8 key to type backslash.

 

Why my backslash key doesn't work?

No, I think haven't written it clearly. I have only one keyboard layout. Instead of clicking win+spacebar I've clicked win+backslash, which resulted in backslash being written. So my backslash only works when I use it together with windows key. Don't know why.

 

Backslash is randomly bound to other keys

When I press the keys "s" and "z", it types before or after a backslash. So I thought it was a hardware problem so I cleaned my keyboard but it persists. When I press the button that controls the RGB lights on my system unit it also types a backslash so I think it might be a software problem.

I fixed it by disabling the backslash as a whole but it is still quite inconsistent.

I have tried troubleshooting and scanning for malware many times but it is still there.

Do any of you have the same problem and what are the practical solutions?