So bought a Razer Blade Stealth 2017 a week ago. Everything went fine, I installed some school programs. Then today, my keyboard goes completely nuts. It starts typing seemingly random characters very rapidly without me touching the keyboard. The problem persists after rebooting, and having reset windows completely. It even starts typing at the login screen. I've also been unsuccessful in booting in safe mode, as it still presses keys in the menu. Some keys also don't work, (1, 6, 9, p, o, backspace) It happened a little after I downloaded Minecraft Windows 10 edition from the windows store, and Greenshot from their official website, which I've had on my old computer without problems. I suspect Greenshot could have been infected. It makes the laptop pretty much useless.
Does anybody know what it could be and what to do?