[SOLVED] Numpad 0 key doesnt work even on new keyboard

[MrJayPlays]

short story . bought a new keyboard thinking my previous 0 key for numpad was busted . infact the new one have same problem . so im guessing its something within the system not the keyboard when i hold window key and press 0 it works only but without it doesnt work . all other num keys works just fine . the top num bar above QWERTY works fine .

any idea how to fix this ?

Corsair Raptor K30 Red Backlit Gaming Keyboard