Asus Rog Strix x370 F no POST, tried everything

ahirtz

Prominent
Jan 20, 2018
3
0
510
Hello, I am new to the forum but I seriously need some help with this new build I am attempting to put together. MB will not POST, it cycles through the boot process with each QLED lighting up, but the green BOOT_DEVICE LED stays lit and the BIOS beep is one long and four short beeps indicating "hardware component failure". Here's the set up:

Asus Rog Strix x370 F AM4 socket motherboard
AMD Ryzen 7 1700 w/ stock fan
120gb sandisk ultra ssd
2x4gb ballistix ddr4 2400mhz ram dual channel
Radeon 480rx
EVGA supernova 850watt G2 gold

I have gone through the 31-step no post checklist several times, and replaced every part, even used anti static strap.
First, replaced the ram as the original was quad channel, not dual channel.
Then I replaced the original ssd with the sandisk, then tried a new psu,
I tried a different GPU than the 480 (R9 270x).
I eventually settled on a dead mobo so I got a new one, got the same LED and bio code. Only one thing left so I replaced cpu, got the same problem. I have no clue what else to try.
I contacted ASUS before replacing the mobo and they basically recommended everything in the checklist. After a couple emails they said the mobo was likely faulty so I replaced it and the problem remains. I'm pretty frustrated and fed up at this point, any help would be greatly appreciated! Anyone else had a similar situation? Thanks!
 
Solution
add a graphics card and make sure the hdmi cable is plugged into the graphics card.

make sure both motherboard cables are plugged into the powersupply (hard to see on the picture).

ahirtz

Prominent
Jan 20, 2018
3
0
510


Here is a link to the pics: https://photos.app.goo.gl/Z3vIRVcqElpwTBqE2
One photo shows it running, but the green LED (boot) is hard to see because the white LED is also lit due to VGA not present. Everything lights up, so board is getting power, same as with the other psu I have.
BIOS beep is still one long, four short.
 

ahirtz

Prominent
Jan 20, 2018
3
0
510


She lives! Holy cow thanks man. I swear I tried this but clearly not, I knew it would be something simple. The BIOS beep code was for a "CPU Fan Error" which comes up on the boot screen. I'm updating BIOS so hopefully that gets fixed. Fan is plugged in and running so cpu shouldn't overheat.
Thanks again!
 
Mar 4, 2019
2
0
10
I have a similar problem, but I just get the aura led lights on, and not anything else just that, I have a STRIX GTX1070Ti A8G and doesn't works, my pc doesn't boot, at the moment when I press the power button the white led from there appears for just a milisec .... Hope someone has the solution
 
Mar 4, 2019
2
0
10
I have a similar problem, but I just get the aura led lights on, and not anything else just that, I have a STRIX GTX1070Ti A8G and doesn't works, my pc doesn't boot, at the moment when I press the power button the white led from there appears for just a milisec .... Hope someone has the solution
Also the fans doesn't spin or turn on the lights