Hi everyone 
I upgraded my Macbook Pro 2014 from El Capitan to High Sierra. everything fine. Next day I Start Mac Screen all grey with inch wide different shades Grey inch wide vertical lines. Hairpin thin line on top portion of menu bar can see top part of cursor arrow. hooked up to monitor to mirror display screen and can use the laptop as a desktop. Also, fried battery that was perfectly fine and healthy before now can only use when plugged in with mag safe. if unpluggled restarts. have read forums tried everything except uninstalling high sierra and going back to original OS 2014 laptop came with' Please help I've always touted how great mac is since I owned my first LC575. I've Had Two Towers since.
I upgraded my Macbook Pro 2014 from El Capitan to High Sierra. everything fine. Next day I Start Mac Screen all grey with inch wide different shades Grey inch wide vertical lines. Hairpin thin line on top portion of menu bar can see top part of cursor arrow. hooked up to monitor to mirror display screen and can use the laptop as a desktop. Also, fried battery that was perfectly fine and healthy before now can only use when plugged in with mag safe. if unpluggled restarts. have read forums tried everything except uninstalling high sierra and going back to original OS 2014 laptop came with' Please help I've always touted how great mac is since I owned my first LC575. I've Had Two Towers since.