Asus Z370 red cpu light turns on for a spilt second then turns off

Aug 6, 2018
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Hey My old Z270 asus z270 Mobo broke so I bought a z370 Mobo just installed everything into it and for a split-second everything turns on but then it turns off and the red CPU light comes on I have no idea what this is can anyone help I have tried alot specs
Also if I unplug the cpu 8 pin connector the g card turns on fine
 
Solution
And did you swap CPUs as well? (Z370 supports no 6100-7700K cpus, by the way)

If that is the issue, sell off your 6xxx/7xxx cpu, and get an i5-8400
Aug 6, 2018
2
0
10

Damn I have a 6700k didn't realize but thanks