Systems turns on and off for a split second help

[reicollasse]

Ok so there are a lot of other fourms looking for help with this but they all seem to be a different problem

So I'm building a nice pc for a friend of mine, and after finishing everything, I plugged it in, and turned the power on.

The computer lights up, all the fans working and everything just for a split second, then it turns off. If I press the on button again, same thing.

The system has and ASUS ROG STRIX Z-370-E motherboard which (helpfully) has a self-diagnosis LED thing. During the split second in which the computer is on, the red LED turns on, indicating a CPU problem.

Do I have a faulty CPU from the get-go? A faulty socket? Please help.

Oh and I checked the CPU for any obvious damage and the socket for any bent pins. Neither.

Build:
Motherboard: ASUS ROG STRIX Z-370-E
Graphics card: ASUS GTX 1070 DUAL
CPU: intel core i7-7700K
CPU Cooler: Corsair H100i v2
PSU: Corsair CX650
RAM: BALLISTIX SPORT 16GB (2*8GB)

 

[mdd1963]

the 7700K does not work in a 300 series mainboard.....

a 300 series motherboard needs an 8xxx processor, a 7700K needs a 200 or 100 series mainboard...

Sell off the 7700K or return it, get the 8700K....; two extra cores, 4 extra threads...!