Hiya


 thanks for information, it really helped me to plan a weekend project to get this setup up and running.

It seems ive run into MOBO issue. Would really appreciate some help.

Got ASUS B250 Mining Expert, Corsair HX 1000i and Corsair 550 PSUs, 8 GB DDR4, intel pentium 7th gen processor G4560 1151 socket. I have  ATX switches, multimeter, a power tester and another mini atx chassis to help. (anti static gloves and stuff)

First i used HX1000i ,  8 Pin MOBO CPU is connected, 24 Pin (EATXPWR_A) A socket is connected. All three molex are connected in serial. ATX Power SW is connected to MOBO. RAM, CPU and Fan connected. There is no response from board.

Took 24 pin EATXPWR_A off, connected it to power tester meter.  So now setup looks like this, molex one connected, CPU 8 pin connected, 24 pin from psu is connected to a power monitoring meter. Now CPU fan starts, no response to switches though. Finally power to the board!. CPU fan spins, but still mobo doesn't post.



Now Connected, HX1000i to 8 Pin MOBO CPU, 24 Pin EATXPWR_A, second Corsair 550 PSU to EATXPWR_B slot of 24 pin, still no response after i tried ATX switch.

Now disconnected 1000i, connected 550 PSU to 24 pin EATXPWR_A and 8 pin CPU - No response.
Now connected 550 PSU to 24 pin EATXPWR_A connected it to power meter, ,molex to mother board and 8 pin CPU - fan spins. Board gets power!

HX1000i fan spins when fan test button is pressed. LED (error indicator ) doesnt glow, its all black cable so no way for me to use a paper clip to sort green/black wires to check but still all indicated it may not be a PSU issue. Since ive tried to used both 1000 i and 550, it looks it is not a PSU issue.

Two different  ATX switches tried, so it can't be ATX issue.

All indications seem to point out ASUS motherboard issue, isn't ? Should i return the board ? obviously MoBO model is new. 2017/16, brand new, hence it can't be mobo clock battery.

Looks like there are no short cuts for me!, just ordered multimeter but this is just getting complicated.