cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

Processors

j12y
Journeyman III
‎01-05-2019 02:17 PM

Ryzen 7 2700x / MSI x470 Gaming Pro - No Post, Fan Not Started

Components:

  • Motherboard: MSI X470 Gaming Pro
  • CPU: AMD Ryzen 7 2700X with Wraith Prism LED
  • Power: EVGA SuperNOVA 750 G2

Should the fan that came with the AMD Ryzen 7 turn on during boot sequence?

First time build.  The PC is not posting.  Noticed that the EZ Debug LEDs on the motherboard for the CPU come on and after a moment turns off.  From MSI troubleshooting site that seems to suggest success but fan does not turn on.  The Memory LED does not turn on either.  I'm not sure if the CPU, Fan, or Memory is at issue and trying to debug but first question was whether the fan not turning on is an indicator of an issue with CPU install.  It appears to be seated properly with power connected for the CPU fan.

Amazon reviewer suggested fan is not supposed to turn on.  Tom's Hardware forum suggested it should (though were different components).  Looking for any clarity on fan behavior I should expect.

Thanks!

0 Likes
2 Replies
prodoctor1987
Elite
‎01-06-2019 11:32 AM

I have the same motherboard and with me all fans start as soon as I turn on the computer. So before any checking. But with me all components work so it could be that the fan does not start because something is preventing the motherboard to work properly.

Why don't you try connecting it directly to the power supply, if nothing happens and other fans turn, than the fan is broken for sure.

0 Likes
elstaci
MVP
‎01-06-2019 03:58 PM

The CPU fan must come on as soon as the CPU gets power otherwise it will overheat within seconds and turn off to prevent damage. Other hardware like the GPU fan might start up at first when you power up but later on turn off when it boots into Windows as an example.

It is a good idea to connect the CPU fan directly to a Motherboard case fan port that you know is working or if possible directly from the PSU. If the fan doesn't turn on when you first power up, than you most likely have a defective CPU cooler. In which case you should open a AMD WARRANTY REQUEST to get a new Wraith CPU Cooler. If it starts working than it could be the Motherboard's CPU Power port is defective or you may have it connected to the wrong Power port.

Make sure you have the CPU Cooler Fan cable connected to the proper Motherboard CPU Power port on the Motherboard.

In case you need to open a AMD WARRANTY REQUEST you can do it online from here: AMD Warranty Request Form | AMD

Note: this happened to me once. When I replaced my original stock CPU Cooler with a stronger Stock CPU Cooler the fan didn't turn on when I applied power. Never reached the BIOS screen because the CPU instantly overheated and shut off. Once I found out the problem, the CPU Fan started as soon as the computer got power and it booted up into Windows without any issues.

EDIT: Make sure you have the correct BIOS/UEFI installed. If you have the wrong BIOS/UEFI installed the computer will never boot up. I would suggest to install the latest BIOS/UEFI since you have such a new Ryzen CPU. For your Ryzen 7 2700X you should have BIOS/UEFI version "7B79v12" installed: Support For X470 GAMING PRO | Motherboard - The world leader in motherboard design | MSI Global  The lastest BIOS/UEFI for your Motherboard is "7B79v15".

Also make sure the RAM MEMORY you have installed is listed on the Motherboard's QVL List. Ryzen are pretty sensitive to the type of RAM Memory installed.