PC reboots on cool boot, after teh reboot is just fine

Fancygg

Prominent
Jun 5, 2017
19
0
510
Hi, i been having this kind of problem since today, today i made a clean intall of windows 10 home and when i turned down the PC and left it there i few hours i tried to boot but my PC just stayed in the POST screen and then it turned off and on by itself, after this, it loaded me to windows fine.

I noticed when i made a boot and the PC starts normal my HDD LED in my case flashes during the POST screen, when i make the cool boot the light doesnt flash, i alredy tried make a memtest86 with one memory stick at a time and both at the same time, never finded any error, i also did the windows clean install cuz my PC wasnt getting to windows, it restarted in the windows logo screen, i fixed that by simply doing the clean install of windows, but now i have that issue.
 
i tried this and it doenst detect any error either SMART status shows fine, today i was playing overwatch, and this pc suddenly froze and my keyboard backlights and audio cutted, my screen stayed frozen, when i tried to turn the pc on again after a hard reboot my pc started bootl ooping, i see that every time i took out one stick of RAM, IT DOENST MATTER WHICH ONE, my pc started to windows but now it frozed in the windows logo screen so i had to hard reboot again to get it to windows, when i put both sticks in the machine it start boot looping again, i think that my motherboard is broken but considering that you are a motherboard master i want to hear your opinion
 
my specs are:
i3 6100
8gb RAM (4x2) crucial ballistix sport lt
motherboard gigabyte ga b150 hd3
ssd pny 120gb
hdd1 western digital 500gb caviar blue
hdd2 western digital 250gb caviar blue
PSU cooler master gx 650w 80+
GPU asus ati hd 7850 2gb
case, cooler master haf 922
 
if i remove the first memory stick i get freezes on the windows loading screen and if i remove the second memory stick i got freezes on the POST screen