Is my MOBO dead? on-board LEDs work, but no beeps, no signal to monitor

[coppatop]

Hi everyone. I just built a computer, and unfortunately, there is no signal to the monitory when i turn it on. The lights on all the components come on (water cooler, fans, motherboard LEDs, BD drive), and things appear to be working, but there is no signal to the monitor. I tried using both the on board video as well as my GPU. What's going on? How can I test what is broken? I'm not sure where to begin. I don't know if it's a fault connection, or broken parts, but my 30 day warranty on the parts are up in about 2 weeks.

Any help would be much appreciated.

Basic parts:

Skylake core i7 6700k
32GB ram
ASUS z170 pro gaming motherboard
Radeon Fury X
Kraken x61 water cooler

Many thanks

 

[geofelt]

First of all, does your monitor have an input selection option?
The video cable must be attached to an appropriate input.

Is the monitor new? Can you test it on a different pc?

You will not get a signal on the monitor until you try to boot to bios.
At that time, either integrated or discrete graphics adapter should be sending a signal to the monitor.

 

[mcnumpty23]

take it you know the monitor works?

connected the 8 pin to the motherboard?

 

[coppatop]

First of all, does your monitor have an input selection option?
The video cable must be attached to an appropriate input.

Is the monitor new? Can you test it on a different pc?

You will not get a signal on the monitor until you try to boot to bios.
At that time, either integrated or discrete graphics adapter should be sending a signal to the monitor.

I tried various cables (HDMI, Display port) and they did not work. I selected the correct input based on the cables i used. I tried the monitor on a different computer, and it does work (no dead pixels either, yay!). Additionally, the power supply is 850w 80+ gold. I should only need about 550w for this system, so that power supply should be plenty.

 

[geofelt]

At this point, I think the failure is with the motherboard.
One thing to check is that the cpu socket pins are not damaged. That can happen easily if you do not drop the cpu into the socket cleanly. If you smoosh the cpu around, you can easily damage the pins with unpredictable results.
If you see such pins, you can try to realign them.
Unfortunately, such damage is not covered, and you would be looking at a $50 repair.
Plan on a RMA for the motherboard.

 

[coppatop]

More info:

I took out all the RAM except for one stick, as well as the video card. When I did this, and used the onbaord video it booted. There was an error, however, saying a CPU fan is not working despite all the fans clearly working. When i plugged in all 4 sticks of RAM, the computer did not boot. When I plugged in one stick of RAM and the video card, the computer did not boot.

 

[mcnumpty23]

well for one thing cpu fan error may mean you havent connected the kraken properly

 

[geofelt]

Good news... sorta.
Try installing the stock cooler and see how you do.
If you can boot. run memtest86+ an each of your ram sticks individually.
The motherboard manual will tell you where a single stick should be inserted.

 

[Daniel_206]

Did you get this working? I'm having the same problem.

 

[coppatop]

Did you get this working? I'm having the same problem.

Yes, it was the ram. The stick I left in was the bad stick. I replaced the bad stick and everything was fine.

 

[Daniel_206]

Interesting. I might try that. My back panel USB's all work, but everything except my HDMI both on the MOBO and Graphics card don't work .Do you think it might be my RAM? I have the Corsair Vengeance LPX 2666 MHz

 

[coppatop]

I figured it out by trial and error -- I tested each cable with different monitors / machines / video cards. I tested the power supply. I tested the video card with different things. It had to be the ram, or the motherboard. Try with one stick of ram, two different times, with two different sticks of ram. Also, consult your MOBO's manual -- there is usually a specific RAM slot you should use when booting from 1 stick / testing.

 

[Daniel_206]

I just bought new ram sticks and I still get no signal on my monitor. I'm honestly not sure what the problem is.

 

[Daniel_206]

I GOT IT TO WORK!! If you have a ASUS Z170-AR, I believe you put the RAM sticks in slots A2/B2. I can't believe this is the solution... But there you go!

 

[coppatop]

I GOT IT TO WORK!! If you have a ASUS Z170-AR, I believe you put the RAM sticks in slots A2/B2. I can't believe this is the solution... But there you go!

I have the ASUS z170 pro gaming edition, so very similar. Again, I had to put the ram in certain spots.

 

[geofelt]

When all else fails, read the motherboard manual.
ASUS wants a two stick ram kit to be installed in slots A2 and B2.
EG: page 1-9 in the ASUS Z170-AR manual.

 

[mcnumpty23]

yep thats why you are meant to read the manual BEFORE you start your build