this post was submitted on 07 Jan 2024
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techsupport

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SOLVED Built new PC, it powers on and fans on, BUT won't power on HDMI monitor, USB keyboard, and USB mouse (streamable.com)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/techsupport
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SOLVED by @[email protected]

Make sure all power connections on the mb are made (there are more than just the 24 pin).

I hadn’t connected the PSU CPU cable. Now it works: https://streamable.com/9bwg1k

Also thanks guys for suggesting the dual channel slots spacing between the memories.

Thanks everyone. You're all wonderful.

See video https://streamable.com/agio65

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[–] [email protected] 2 points 1 year ago* (last edited 1 year ago)

Locate you POST diagnosis LEDs (usually top right of the motherboard). Are any of them on? If so, there’s your problem.

I found multiple supposedly LEDs both at the top right and bottom right, but none of them are on.

Would help to have more info like config

  • CPU: Intel Core i9-12900K
  • iGPU: Intel UHD Graphics 770
  • Motherboard: GIGABYTE B760M AORUS ELITE
  • Power supply unit: Corsair CV 650
  • Primary memory RAM: CORSAIR Vengeance 32GB DDR5 (2 x 16GB)
  • Secondary memory SSD: Western Digital WD BLACK SN770 M.2 2280 1TB
  • CPU Cooler: Cooler Master Hyper 212
  • Case: Corsair 220T RGB
  • Monitor: LG 24MK430H 24"
  • Keyboard: Logitech K120 USB

and where you plugged everything in.

What exactly do you mean?

you plugged in your ram wrong. If you only have 2 sticks, they should never be touching, to take advantage of dual-channel. Refer to your motherboards manual

thanks, I just set it according to mobo manual pg 15 for 2 modules