Aurora R7, won't turn on

see this discussion https://www.dell.com/community/Alienware-Desktops/Aurora-R7-won-t-power-on-test-power-button-working/td-p/7755566

specifically an Aw master suggested "Try pushing the psu test button and then power button both at the same time and seeing if it boots that way."

No luck.  Doesn't do anything.

Re: attempt to pin out the psu motherboard connector with a multimeter 

do you mean you want to try jump start the pc by temporarily shorting the pw+/- pins of LED connector and bypassing the power button?

if you want to do this at your own risk:

Front panel power on the white 12 pin connector by user report: PWR BTN +5V / Gnd

R7:  1 2 3 4 5 6 7 8 9 10 11 12

disconnect the LED controller cable connector (carefully and gently, do not pull on skinny wires), use a flat blade screw driver to short pin 3-4 momentarily.  This is effectively the same as pressing power button.  In case there is a circuit break somewhere between power button and the switching on of Pin 3-4, doing this test will bypass the break.

I pulled cmos battery.  Held power button for 5+ seconds,  put everything back together but didn't do anything different

I dont think so.  Anyone attempt to pin out the psu motherboard connector with a multimeter to see if the psu took a dump.  Good or bad idea?

do you have a spare working psu that has 2x 8 pin EPS to test the R7 motherboard?

How to run self-test using the button on the PSU

1. Turn off the system.
2. Press the BIST button on the system and check whether the LED lights up.

• If the BIST LED does not light up or the PSU fan does not spin correctly, then the power supply can not deliver power to the system and could be caused by any component connected to the power supply or the power supply itself. The next step would be
• Reseat the power cable in the power connector on the back of the computer and the electrical outlet.
• Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly.
• Ensure that any power strips being used are plugged into an electrical outlet and are turned on.
• Ensure that the electrical outlet is working by testing it with another device.
• Use a verified working Power cable.
• Ensure that the main power cable and front panel cable are securely connected to the system board.
• All power supply units include a self-test ability in an isolation mode. A test button and LED are on the side of the unit where the AC plug is located. Ensure that the power cable is connected to the supply and press the test button to test the PSU.
• If the PSU LED does not illuminate, remove the PSU cables from the system board and test again. If the LED still does not illuminate when the test button is pressed, the PSU is possibly faulty.
• If after removing the cables from the system board and the PSU LED illuminates, one of the attached devices or components could be faulty. Remove all attached components, reattach the PSU cables and using the PSU test button, install each component individually to test.
• Install a verified working PSU.

Well when I got home this evening I started removing power cables free from components and hitting the test button after each component was disconnected.  The green lead did not turn on when plugging the pc into the wall outlet or when pressing the test button after each disconnect.

The BIST test on the PSU should make the LED green and I believe it also spins up the fans if I remember correctly.

Looks like a bad PSU, or a bad power cord. Is there actual power supplied to the PSU?

I have seen power bars fail before.

I would contact @DELL-Cares to see what your options are.

I've tried with a different power cables as well as another outlet with no surge protector just in case.  No fans or lights.

This one may be an option to replace the R7 psu since based on tests sofar the stock psu seems bad.

EVGA 850 BQ 110-BQ-0850-V1 80+ BRONZE 850W Semi Modular

https://www.ebay.com/itm/303420589617?epid=2254416615&hash=item46a546c631%3Ag%3AayQAAOSwfL5c5OY%7E&L...