reverse effects of lighting?

tried searching all over google but couldnt find anything about this…
well i tried playing around with lighting, didnt really work maybe because i’m using 2d?.. oh well, but now removed all they code i tried and my application is stuck with a white screen.
just curious what i can do to fix this? like i said already tried removing all lighting code and even glDisable it :-/

all i did was call glEnable(GL_LIGHT0); & glEnable(GL_LIGHTING);
and screen all white even after removing code and disable

eh… computer restart fixed it