Space bar does not work

Hello there, My laptop seems to hate my spacebar when the left and up arrow keys are held down. I though it was a problem with project 64 because when right and up arrow keys are pressed down, the space still works. I found out that it was not the project 64 beacuse when i tried playing NFS Underground, space still did not work when left and up arrow key is pressed down.

Any ideas why and how to fix it?