X99 not starting

[Padraig]

Hello,

My x99 mobo is not showing any error codes when my pc is not starting. The fans don’t spin only the power light flashes once after plugged in. My pc suddenly stopped turning on a week ago and I cannot figure out why. It’s a X99 Gigabyte gaming 5 m mobo. It’s not posting error codes so does that mean it’s the mobo?

The psu was replaced with a 850 Evga platinum last week. So it’s not the psu failing.

I’m sure it’s not shorting I disconnected everything but cpu and ram it’s been in this case secured the whole time. What could it be? No error codes?

Any help is appreciated

Video of light flashing when given power
https://youtu.be/I76wzZNaso0

 

[Padraig]

Yes I’ve checked the mobo manual there should be a error code. I changed the Psu immediately after the computer stopped working it has the same symptoms as before it’s deffo not the psu or lack of connectors. I removed all the pci and SATA cables just to check if it would spin up, still no luck. I can try cmos reset.