There was no changes done to the PC and i have not used photoshop for about a week already. when i used photoshop this weekend, i realized that all the shortcuts are ineffective! even Ctrl-O for opening image has no response. without saying, those previously recorded shortcuts has no response too.. need to manually click 'play' botton to use them.
I've done a repair to the software (technically a reinstall) but the same.

anyone has similar experience? wanna share how you resolve it?