Computer boot into something... instead of windows 10 log-in screen

May 22, 2018
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after i turned on my pc the pc boot into something called Nvidia GPU 1060 instead of windows 10 and then shut down automaticaly this happened after i change my gtx 660 into 1060
and after it turned off by itself i went to turn it on again and it work like normally
this problem never occur to me in my previous Graphic cards
it happen every time i want to boot my pc after i left it off for more than 2 hours
is there any fix to this or is it harmless?