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PC take multiple attempts to power up


my computer has always had trouble starting up. It quite often takes 4 or 5 pushes of the power button to turn the pc on / unplug / replug at the wall and hit power on for it to get going. Once going it is great and boots nicely with no problems.

I updated the PC about 6 months ago and changed the mobo, cpu, gpu, ssd and win 10 64bit but not the power supply. To begin with all was well and now I am having the same trouble again with powering on.

Could it be anything but the power supply??

Win 10
CPU - I5-6600k not overclocked at the moment
MOBO - Z170-gaming K3
Ram - 16gb DDR4
GPU - GTX 1060 6gb

Power supply - Corsair AX850 (I think plenty powerful enough)

Any thoughts would be most welcome!


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Clarification Request
Is the BIOS 23a (for board version 1.1)?

In reply to: PC take multiple attempts to power up

Why I ask is the notes on updates plus this one "Update CPU micro code to fix HT flaw issue" could have odd issues if the BIOS is not current.

All Answers

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In reply to: PC take multiple attempts to power up

Plug a lamp into the same wall socket as the pc is using.
Power on the pc.
Does the light flicker?

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