[HELP] Motherboard probably dead ? SB_PWR not on !

Hello...

I bought the Sabertooth Z77 motherboard and an AX650 Corsair psu.


The problem is that after I installed all my pc components ( hdd, sdd, gpu , cpu, cpu stock cooler, etc...) , I tried to power on my system but nothing happened: no fan noise, no leds....


My first thought was that my psu was dead, so I tried it in another PC and it worked.


I noticed that my SB_PWR ( green led) is always off , for me it is really strange because even thought it is broken the led should turn on.


Can anyone help me please?
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More about help motherboard dead sb_pwr
  1. Run through this guide step by step http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems
    You did you standoffs for the motherboard? Any way post back after going through the guide.
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