guys, i'm currently using the old benq FP531 lcd...but my buttons got problem and for no reason, the lcd will turn off by itself...

is this problem fixable? and which brand and model of lcd would u recommend me? i use my lcd mainly for designing, movie and little bit of gaming...and will prefer a 19 inch...budget is roughly rm700-800..and i prefer not to have a widescreen...as it will stretch the image...(unless there's one that doesn't)