Asus z170 pro gaming red diode glowing

Gazi

Distinguished
May 13, 2011
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yesterday i noticed red diod glowing near my ram sticks, today its gone(only glowing on the bottom of the motherboard. Does this diod was indicating something?
 

Gazi

Distinguished
May 13, 2011
256
0
18,790
i have hdd, but why? Ive seen it has problems on windows 10, windows 7 was fine with it. i like to use this function as booting up takes very long time on my pc with windows 10.