New i7-8086K not booting in existing PC

Aug 11, 2018
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I just replaced my old i5-6500 CPU with the i7-8086K that I won from the 8086 sweepstakes, and now my PC won't boot. Most of the time, the trim lights on the motherboard light up for about a half second and the fans spin up feebly, but then everything shuts back off. About every 10 tries, the lights and fans stay on but there's no video signal. If I plug in my GTX-1060, its fan jiggles every 5 seconds until I turn the PC off. My PSU is 620W so it should be plenty powerful for the new i7, but it's not working. My motherboard is a Gigabyte GA-Z170-HD3 which is on the list of supported motherboards for the i7-8086K that I found. What else can I try? I suspect my PSU may be on the fritz as I have previously had issues with random system freezes, but it hasn't happened in a while. Should I try a new PSU or is something else awry?
 
PCPartPicker part list / Price breakdown by merchant

Motherboard: ASRock - Z370 Pro4 ATX LGA1151 Motherboard ($106.99 @ Newegg)
Total: $106.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-08-11 19:40 EDT-0400

This is a solid cheaper choice.

PCPartPicker part list / Price breakdown by merchant

Motherboard: ASRock - Z370 Extreme4 ATX LGA1151 Motherboard ($155.99 @ SuperBiiz)
Total: $155.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-08-11 19:41 EDT-0400

This is better and will,do,whatever you want.
 
Aug 11, 2018
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Got a new mobo and swapped everything over, and everything seemed to work fine. Didn't even have Windows fuss at me for license issues (I linked it to my MS account before switching mobos). Now I got a new case and I'm having memory issues....will start a new thread for that
 

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