any file I open, along with the color swatches and sampler, in PS has a warm white color where it is supposed to be white. I don't now how this happened and I have no idea how to get the whites back. Please help, thanks, P

as I stated. the white in any file I open in PS s a warm white. I don't know how this happened or how to fix it. I do know it is not my PC or moniter. Only in PS. any hepl is appriciated, thanks, P