Abilities bug

I Was playing Nidalee in top lane in a ranked game when i was about to charge inn my Q, W, E and R stop working. When i respawned i teleport upp in lane again and pressed R so i could poke whit here Q but it still dident work to press Q, W , E and R! so i relog the game and that usly fix the same bug but only whit one abilitie, but it dident help so i relod again and restart my pc but it dident work. I could type QWER in the chat so my keybord did work (i could D and F) I did also try to switch abilities from QWER to ASDF and back again but it dident work!!! Anny one know what can fix the problem if it happens again? Greats larmat