This had to be the strangest keyboard issue ever, HELP!

[Ya_Mi]

I have a Dell laptop i bought for a cheap, there's no issue with the keyboard in itself but there's a strange problem with its behavior.

Sometimes when i type on it, it works fine, it translated and shows what i pressed correctly.

But then it doesn't and shows random gibberish (see picture)

Spoiler

I thought it was a virus so i did a fresh install but the problem still persist.

I also tried a USB keyboard but it behave the same way.

Tried keyboard test app too and there's no issue with it like stuck/shorted keys.

Tried messing with the keyboard settings e.g language, layout, etc still nothing

 

What could be the problem?

Thank you in advance.

[Ya_Mi]

FOUND THE ISSUE.

The ALT keys are short circuited somehow. Sometimes it get stuck and sometimes it don't