The combat acts... weird on my laptop. When I hit one of the number keys on my laptop for a spell, the action bar disappears, the target thing goes purple, and I have to hit enter again for the spell to cast. On my desktop, it's just click enemy, hit number key, and it's casted. I'm not sure if it's my laptop keyboard or the game, though.
My laptop is a Toshiba Satellite P770. Not sure of the exact model of P770, though.