hi, i have an acer ES1-531 that has a dark blue screen. fans come on, hdd seems to work but nothing on screen. tried connecting to external monitor by hdmi but same dark blue screen. tried removing hdd, dvd drive changing the memory . tried one memory stick at a time also removed the bios battery for a couple of days but still no luck. also the battery does not charge.\nanyone have any ideas.\nRegards\nPappagrump.