PC freezes for an unknown reason and i need to know how to fix it

gerneric name

Prominent
Jul 19, 2017
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Hello, sorry if this is the wrong category but i am getting desperate and i really want to get this fixed. I built my pc around December of 2016 and it didn't start having these problems until about a month later, if i am using my headphones as speakers it emits a short screech and then the computer freezes and the keyboard back lights shut of, if i'm using my surround sound speakers, it emits a continuous screeching noise and the same thing happens. it happens about once every day for some reason though it seems to only happen when i play league of legends, i went a week without playing it and it didn't crash once, although i have no idea if that has anything to do with it. I need to know why it is crashing and how to fix it.
my specs(just in case it might help) are
cpu: i7-6700k (not overclocked)
motherboard: asus rog maximus hero viii
ram: pny anarchy 2133mhx (i think)
gpu: 2 gigabyte g1 gaming gtx 1070 in sli (i have sli turned off although they are both plugged in and teh sli bridge connecting them)
Hdd: 2tb seagate, 2tb toshiba
cpu coller: corsair h100i v2(i think its v2)
powersupply: evga supernova 850 g2
 
Solution
is the bios on the asus rog maximus hero viii on the latest version
BIOS
have a fresh formatted FAT32 USB stick download the bios from motherboard manufacturer stick the bios you just downloaded on the USB stick recommend at least 2 bios's re-boot press the delete button repeatedly to get into bios select system update bios select usb device flash it leave it to do its thing then you should be good with new bios
if done wrong will brick your motherboard
is the bios on the asus rog maximus hero viii on the latest version
BIOS
have a fresh formatted FAT32 USB stick download the bios from motherboard manufacturer stick the bios you just downloaded on the USB stick recommend at least 2 bios's re-boot press the delete button repeatedly to get into bios select system update bios select usb device flash it leave it to do its thing then you should be good with new bios
if done wrong will brick your motherboard
 
Solution