H270 PRO4 not bootoing

Please list your full system specs as well as any components that are used:

Try another PSU, that unit is over 8 years old and likely is not compatible with Haswell and newer CPUs. There was a change in the way power is handled that started with Haswell CPUs.

Edited by Xaltar - 23 Jan 2017 at 4:31am

dagon73 wrote: Dear support, thanks for answer Ok I can try with another PSU although I see recent PSU are ATX v 2.3 like the one I have Do I need to use only the 24 pin or also the 8 PIN on the MoBo? Thanks

You MUST use both, the 24 pin and the 4/8 pin CPU power cable. If you don't have the PSU connected to the 8 pin CPU power connector, the CPU will not work at all.

If your PSU does not have an 8 pin CPU power connector, a 4 pin connector will work fine.

Broodja wrote: dagon73 wrote: Dear support, thanks for answer Ok I can try with another PSU although I see recent PSU are ATX v 2.3 like the one I have Do I need to use only the 24 pin or also the 8 PIN on the MoBo? Thanks Were you able to resolve your issue? Would be pleased to hear any good news  I have very same issue, no POST, no video (both DVI and HDMI), but working CPU & GPU coolers. My config:  i5-7500 (new) ASRock H270 Pro4 (new) 2x8 DDR4 Hyper-X Fury Black 2400Mhz (new) PSU FinePower DNP-550 500W (old, around 4yrs) I wonder if my PSU is a weak link, though old config with even higher power consumption works fine. Any thought what can it be?

Given the last question that dagon73 asked, my guess is he did not have the 4/8 pin CPU power cable connected to the board, which is required.

In his case, it seems the PSU itself was not the problem. I assume you have the 4/8 pin CPU power cable connected to the board?

It was not easy to find information about your FinePower PSU, at least not on English language websites. That brand seems to be common in Russia, but not much elsewhere. I did find it seems to have multiple +12V rails, limited to 16A on two rails, 14A on one, and 8A on another. Those rails when combined are way over 500W, which does not include the +5 and +3.3V rails. This PSU was designed for older processors, that did not use 12V power for the CPU.

What was you old PC's configuration?

But it could be any number of other things that are not right.

What is the full model number of your memory? Did you try your memory in the A1 and B1 slots?

You said you have a video card, but did not include its information. Have you tried using the Intel integrated graphics, removing the video card?

If you move your memory to the other slots, or remove the video card, be sure to clear the CMOS/BIOS before starting the PC again.

My suspicions confirmed - it was PSU not supporting my CPU.