@Red-Sand : Thanks for your help I tried your instructions issue persists. I think it happens when I use Internet or play you-tube videos. Just a hunch.
@sri369 setting a supervisor password enables the greyes out options below it but boot mode is still only UEFI, legacy doesn't show up as an option...I guess I'll just try without this step, with MBR at windows install.Could you perhaps link to the latest BIOS for PH317-52&PH315-51? I just noticed I NEED the BIOS to support Legacy in order to be able to install with MBR...
Tried all above mentioned steps, still issue persists. Clueless about what to do ,acer service center took my laptop for 5 days and returned saying that everything is ok as they installed windows 10 1703 version, within an hour i received my laptop i got same issue . Its sad that acer team unable to find whats the problem ...
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