Most awkward bug

I just got done playing a game with le Katarina. It was very fun until the point when I couldn't activate my Q, R, or recall buttons. I thought this was a problem with my keyboard at first, but I quickly realized that I could type just fine. Then I thought I just had to reset my client real quick. After doing so, nothing happened, and I was one confused mother F. I was explaining to my team that couldn't use my spells, and knowing the LoL community they just thought I was trolling and reported me for afk, whilst I was typing reddit post the entire time. I tried reconfiguring key-bindings, looking online to see if anyone else had the same problem I have, and I even tried to click my spells and using them on enemies. I then presumed to reset my PC, to see if that was the problem, nothing happened. At this point I was just said to myself, "Screw it", and started this post. Let me know if anyone else has had this problem before, and if there is anything I can do to prevent it, I don't want this to happen in the future. Sincerely, Beatbox King