New MoBo, working components, everything seems to be fine... But nothing works

aleksander.panfil

Prominent
Nov 3, 2017
4
0
510
Hello everyone,
I am stuck at a problem which I cannot seem to solve it no matter what - I have tried all the troubleshooting ideas on the Internet, so I resort to making a new thread here. Any and all help will be greatly appreciated.

First, the specs:

Motherboard: Gigabyte GA-990FXA-UD3 R5
GFX cards: Gigabyte GeForce GTX 1050 2GB and Radeon HD 6970
CPU: AMD AM3+ X8 FX-8350 4,0GHz (with the Cryorig H7 fan)
PSU: TX750 Corsair
RAM: 2x CML8GX3M2A 1600C9 8 GB (2X4 GB) 1600 Mhz 9-9-9-24 1.5V

It must be said that all the parts (except for the PSU) are not older than two-three months and are confirmed to work as intended (save for the MoBo - fresh out of the box).

A new MoBo has arrived today (the old one, Sabertooth 990fx, gave up the ghost two days ago). I plug in the essentials, hear a single beep, but nothing appears on the screen. I double-check the installation of every piece, and everything is sitting properly. I unplug everything except for the CPU and HSF, but I still only get a single beep at the beginning, just like the one that I always get when I turn the PC on. I have tried only plugging in one GFX card at a time, one RAM stick, etc. The peripherals are recognized (green lights on the keyboard/speaker). The MoBo has no LED lights that would indicate the source of the problem, sadly enough, and the beeps do not change, which makes it even harder to pinpoint the origin of the problem.

Two pictures, can take more:

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You mean you got single beep without any ram installed? Or it was with ram?
Btw, why GPU is on second x16 slot? Did you try it at first slot?
 

aleksander.panfil

Prominent
Nov 3, 2017
4
0
510


1) Both. There is no difference. I get a single beep when there is no RAM as well as when the sticks (or even one stick) are in. It is also the sound that I'm used to getting when the PC worked correctly with the old MoBo.

2) Yes, I did. I have tried it in all configurations.
 


Obviously, that is not correct behavior. Without ram, you should get error beeps, not single beep. I'm afraid motherboard is DoA.
 

aleksander.panfil

Prominent
Nov 3, 2017
4
0
510


Ugh, I was afraid of that. I'm no expert in hardware, not by a long shot, but I have installed and uninstalled quite a few pieces in the last months, and it does seem abnormal - there's literally only the CPU in there, but I keep getting the normal beep. Hence my request for help here...

I have deemed the previous motherboard, Sabertooth 990fx r1.0, dead, because it started lighting up the CPU red LED and the boot device red LED interchangeably (without booting the PC, of course) even though everything was installed properly, and I have not found a solution to that. Such a shame - two MoBos, not a single one that works :( thank you for your diagnosis, kind DRagor!