Hi. when I try to play games on this PC for example a downloaded chess game or online game after about 5 - 10 minutes it will freeze and the scrren will turn into coloured stripes. note that this PC is very old/crap but still works fine when not playing games. please dont laugh at specifications

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pentimum 111 processor, 224mb RAM lol adn windows exp
i want to be able to play games on this PC so plwase make suggestions of waht this could be and how i could fix it, thanks. oh and that PC fits the game requirements by a little too.