Is my computer good enough?

[bobbo1983]

its running at a nice speed anyway.. ive been playing it for a few hours and i have these questions now.
firstly, in mario kart wii ive been using toad and hes got a little bit of a blur around his head. is that burned into my screen or on the graphics?
secondly, i cant minimise it when i run it on fullscreen. when i hit esc it totally closes it. it didnt do this before but when i updated dolphin or changed some setting it started doing it do you know what the go is?