Keyboard causes pc to freeze during gaming

[LmZ]

I bought a Logitech Sidewinder x4 keyboard some time ago and ever since then when I went to play dota 2 I would get random freezes during which I had no control over anything that happened in game and there would be beeping noises coming from the speakers like morse code or something. The freeze would stop if I did nothing for a few seconds, if I kept inputting commands it would carry on the freeze and beeping.

Its really random when it happens, sometimes it doesn't happen for months. Sometimes it happens in the same game about 5 times. Is it to do with me inputting too many commands or maybe something else. How the heck do I fix this? Any help is appreciated

Edit: The keyboard is a wired USB keyboard, the port it is in is right next to the USB cable of my mouse (dunno if that even makes a difference). I am using avast antivirus and it happened even within 'silence / gaming mode'.

 

[-HH-]

So I have a couple of theories.

If it's a wireless keyboard your phone or something runs on a not too far off frequency which therefore means you will get the DA DA DA hum buzz kind of sound from audio devices.

The antivirus could also be glitcjing with your keyboard (something I've experienced)

If you're also trying to hit keys at the same time you may not have Nkey rollover effectively meaning you cannot press more than one key with it registering.

 

[LmZ]

I have tried an Nkey rollover test and everything appeared fine but I cant really see test the combinations I do in game, nor do I really know exactly which key combination I did at the time, anyone else know what could be the issue?