PC Shuts down after a few seconds

[Sexypox]

I recently purchased a new PC by parts. After a few weeks of working flawlessly I started getting the blue screen of death after logging in. With some help I was able to sort it out. But from since, when i power up the PC...a few seconds after it shuts off....lights on MB go off and fans go off.....and on the second attempt it starts perfectly with no problem. The shut down only occurs on the first boot attempt. Any help would be greatly appreciated.

PC Specs:
DEEPCOOL GENOME II case
ASUS ROG Maximus IX Hero motherboard
Intel 7th Gen Intel Core Desktop Processor i7-7700K
G.SKILL 32GB (2 x 16GB) Ripjaws V Series DDR4
Samsung 850 EVO 250GB 2.5-Inch SATA III Internal SSD
PNY NVIDIA Quadro P1000 Professional Graphics Board
EVGA SuperNOVA 850 G3, 80 Plus Gold 850W, Fully Modular
2# Dell Professional P2717H

Running windows 10 pro

 

[nydomino24]

make sure to update everything
make sure you applied thermal paste
make sure you try turning off and on/restarting many times in a row to find a real pattern of failure

 

[Phillip Corcoran]

I had a similar problem - - - BIOS update cured it.

BIOS updates here:

https://www.asus.com/Motherboards/ROG-MAXIMUS-IX-HERO/HelpDesk_BIOS/

 

[Sexypox]

I came to realize that it happens mostly after the PC has been powered off for a period time. If i'm using the PC and i restart, the issue doesn't occur. If i power off and power on immediately, it doesn't occur either. The only other time it happens, is when the PC has been in sleep mode for a period time but this isn't always the case.

 

[Sexypox]

I have updated every possible thing I could update on the PC. Windows...all hardware drivers....the bios...just name it...its up to date....

 

[Sexypox]

So as of yesterday My Pc Refuse to boot. On the motherboard it shows an A2 error. I'm frustrated after spending so much on a pc and its only 3 to 4 months since i Have used it.....Please someone help!!!