Question Is my mobo dead?

May 27, 2019
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Hello,
My Asus X99 WS/IMPI doesn't start at all.
Red light CATTERR flash and stop.
I did a lot of trials, ending with mob alone (no pc, no ram, no battery). It "runs" only if I disconnect the 8 pins CPU power on top. It doesn't really run but doesn't stop, and CATTERR red light continuously.
Perhaps I did a mistake plugin a 4 pin pcie power in the cpu power? Not sure, I don't know.
But it was not really working before anyway. Just running for few secs and stop.
Why there are three ATX12 power plugs on this mother board ? Two on the top are 8pins each. One on side is six pins...
Any idea ?
 
May 29, 2019
78
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What exactly is your system doing?

Is it shutting down (and staying off) or rebooting?
Are you losing all power (no lights, fans, etc), or is only the display going dark?
Are you getting a BSOD?