Check the wires on YOUR motherboard. Steps 1) Turn off computer 2) Unplug all the 115V Power connections. ALL of them. 3)Lay the computer down, so YOUR motherboard is flat like the tabletop. 4)Open case. 5)Check the wiring diagram a)Manual came with motherboard b)computer manual c) YOUR downloaded manual. 6)Look at wiring. 7)Is all the labeling on the connections facing the same direction? a)This is polarity b)The polarity is correct=works c)polarity is incorrect=fails 8)Are the wires on the correct posts? a)Yes=works b)Change the wiring if YOU believe the diagram is incorrect. c)Change one LED at a time to track progress. d)Write the results down so YOU can solve this the first time. 9)Check BIOS later after Powering On 10)In BIOS the item for ON Switch has three choices<flexible>. 11)IMO use delay 4 seconds.<I believe it causes less problems for the Power Supply>. 12)Does YOUR computer have a restart button? If it does, and YOUR wires are mis-matched, the ON Button and the Restart Switch may be reversed-working but reversed Or the wires may be not working and reversed. So first try the diagram in the manual, and second try changing them and following the progress on paper. As YOUR friend, please know I did not say to change these wires with the computer running.