Full Screen Problems

Sorry, for all these techinal problems, but jsut one more.
My dx keeps going into window, I can't get it full screen.
I reinstalled it, due to my ini being messed, and when I loaded up deus ex, it went into window, i hit alt +enter, that didn't help, and then, I went into settings, went into display, and hit the toggle full screen button, but it keeps on bringing me back. I am running dx in normal mode and not is safe as well. Is there any other reason that might be preventing the screen to stay in full screen?
Thanks.
My dx keeps going into window, I can't get it full screen.
I reinstalled it, due to my ini being messed, and when I loaded up deus ex, it went into window, i hit alt +enter, that didn't help, and then, I went into settings, went into display, and hit the toggle full screen button, but it keeps on bringing me back. I am running dx in normal mode and not is safe as well. Is there any other reason that might be preventing the screen to stay in full screen?
Thanks.