Motherboard

I built my own system around 3 years ago and i have run in a problem that my mb would be dying in like 5-6 months. i have gone through 4 mb by now and it happened again, pc would power up but monitors and keyboard mouse won't. It does not even load bios, cpu fan isnt powering up as well and i have no idea what could cause it

System specs:
I7 6700
Gigabyte gtx 1060 6gb
Asus z270e
16gb a-data ddr4
Corsair 750 psu

I hope someone can help me as i am out of ideas what could cause it

Thank You

I'm afraid that since these fora belong to PC Specialist (PCS), who sell cutom built PCs and laptops, we can't offer advice on other builds. You might get better help on a more general forum like Tom's Hardware.