Won't do 1st boot and mobo, GPU and peripherals LEDs flashing in "breath mode"

barroso

Member
Nov 3, 2015
30
0
0
Case and cooler fans are spinning. Mobo, GPU, mouse and keyboard LEDs are all slowly flashing - not downright on/off but rather slowly transitioning, as the breath/weave mode on gaming keyboards. As i turn it off the mobo LEDs continue to flash in that fashion until i unplug the power cable. No bips whatsoever.

Mobo is Asus z170 pro gaming. PSU EVGA G2 850W, which is far more than the system needs atm.
 

boomerang

Lifer
Jun 19, 2000
18,883
641
126
So you're saying you have no video?

Tell us what other components make up the system and what's your experience level?

This thread should really be in Computer Help.
 

Ketchup

Elite Member
Sep 1, 2002
14,559
248
106
Make sure all the motherboard mounting screws are secure. Make sure your 8-pin cpu power and video power connections are secure.
 

Puffnstuff

Lifer
Mar 9, 2005
16,187
4,871
136
I've never seen a system with a weave before? Is it one with jerry curls or straight??? Will you please post a picture of this so we can see it? :awe: Really though the blinking pattern of the led's usually tells you something so check your manual and see what it tells you about your particular board.
 

barroso

Member
Nov 3, 2015
30
0
0
So you're saying you have no video?

Tell us what other components make up the system and what's your experience level?

Yes there is no video or POST beep, yet the mobo, peripherals and GPU LEDs and fans function without interruptions.

I tried to boot with the mobo outside the case to rule out a short but it reacts in the same exact way. Also ruled out the malfunctioning of the GPU and RAM.

The LED breath mode is a feature of the mobo although i don't think the GPU and peripherals should also be affected by that.

Asus Z170 pro gaming, 6700k, asus 390x, ddr4, hyper evo 212, EVGA G2 750W, Corsair 300r, inexperienced at best, some basic knowledge from the web.
 

boomerang

Lifer
Jun 19, 2000
18,883
641
126
First step I always take is to reset the BIOS. Follow the instructions in your manual on page 1-16.

If that doesn't fix it, the next step is to make double sure your processor and memory do in fact work with the board. The BIOS revision is more than likely on the label on the box. I believe ASUS is doing that now. Cross check that BIOS version to the reference chart available at the ASUS site to make your BIOS revision works for that processor.

Memory is not going to be that easy to check. There are tons of different manufacturers, speeds, chips, etc. You may luck out and find in on their compatibility chart. If you don't, it doesn't necessarily mean anything.
 

boomerang

Lifer
Jun 19, 2000
18,883
641
126
Additionally, you can try to start the system with everything non-essential disconnected. You need a CPU with power for the cooler connected. The PS obviously with all power connectors attached. One stick of ram and use the onboard video.
 

cyclohexane

Platinum Member
Feb 12, 2005
2,837
19
81
Yes there is no video or POST beep, yet the mobo, peripherals and GPU LEDs and fans function without interruptions.

I tried to boot with the mobo outside the case to rule out a short but it reacts in the same exact way. Also ruled out the malfunctioning of the GPU and RAM.

The LED breath mode is a feature of the mobo although i don't think the GPU and peripherals should also be affected by that.

Asus Z170 pro gaming, 6700k, asus 390x, ddr4, hyper evo 212, EVGA G2 750W, Corsair 300r, inexperienced at best, some basic knowledge from the web.

Try reseating your GPU, or using the integrated graphics to trouble shoot the no video problem.

FYI, if your case doesn't have a speaker (like the nzxt s340 that I own), then you will never hear the POST beep :)