Question New Ryzen build does not turn on after GPU installed

[lollybo]

The Problem
I had assembled all the components and pressed the power button - the fans spun and but no HDMI output with POST LED being white indicating VGA issued- figured is because the 2700x isn’t an APU so the builds needs a dedicated graphics card. I added my GTX1070 which was working from another build - and pressed the power button and it’s like nothing is happening - the fans won’t even start to spin. The mobo is getting power (because rgb is on as well as orange LED below the ram stating there is power) but pressing the power button makes it act like nothing is happening.

What I have tried
I have tried taking out the GPU. Then the fans spin like normal but there’s no HDMI output because there’s no graphics card so I’m back to square one. I have made sure the basic troubleshooting is done... reseated ram, made sure mobo 8 pin 12v is plugged in from the PSU, made sure GPU is plugged into the mobo.

Specs
Lian Li tu 150x, asus b450i ROG Strix ITX, Seasonic Sgx 650W Gold, AMD Ryzen 2700x, gskill ripjaws V 16 gb ddr4, adata xpg 8200 1tb NVME drive

I was a pretty careful installer using a static wristband as well. How could adding a GPU basically cause the system to not turn on? I am hoping hardware is not faulty.

 

[Markfw]

Stupid question maybe. Is the power connectors on the video card all plugged in ?

 

[Steltek]

Stupid question maybe. Is the power connectors on the video card all plugged in ?

+1

Then, if the video card is hooked up and is still not working, I would suspect a dud power supply.

 

[Campy]

Yeah first make sure GPU has power, then make sure you plug the monitor cable into the graphics card, not the motherboard.

 

[lollybo]

Yes the video card is plugged into the PSU. I will also try to hook it up to another PSU I own to see if it is a dud PSU

 

[Steltek]

If you haven't done so, it also wouldn't hurt to try pulling the NVMe drive in case it is defective.

 

[lollybo]

Thank you all for all the help! Seemed to have gotten it to work. Reseated the GPU and switched out the power supply cord- not sure if that was what ultimately did the trick. I also used another display port slot on the GPU. Maybe the second slot wasn't what the GPU was looking for when booting.

Some questions- my system is unstable at the voltage my ram is rated for. On the Gskill ripjaws V DD4 rated for 3200, when I set it at 3200 on the default ram voltage at 1.35V on the DOCP overclocking settings it is unstable so I have go to back to 2133 to get it to run. Interestingly, when I bump up the ram voltage to 1.38V, the 0.03V is enough to make it stable- did not know just a small increment can make such a big difference. Would this do long term harm to the system?

Also, the system is pretty loud one of the case fans is connected to AIO and it is at 2000RPM. I have trouble adjusting the speed in BIOS, do you have a good program you would recommend? I can manually convert it from PWM to lower rate with an adapter if all else fails

 

[Markfw]

Thank you all for all the help! Seemed to have gotten it to work. Reseated the GPU and switched out the power supply cord- not sure if that was what ultimately did the trick. I also used another display port slot on the GPU. Maybe the second slot wasn't what the GPU was looking for when booting.

Some questions- my system is unstable at the voltage my ram is rated for. On the Gskill ripjaws V DD4 rated for 3200, when I set it at 3200 on the default ram voltage at 1.35V on the DOCP overclocking settings it is unstable so I have go to back to 2133 to get it to run. Interestingly, when I bump up the ram voltage to 1.38V, the 0.03V is enough to make it stable- did not know just a small increment can make such a big difference. Would this do long term harm to the system?

Also, the system is pretty loud one of the case fans is connected to AIO and it is at 2000RPM. I have trouble adjusting the speed in BIOS, do you have a good program you would recommend? I can manually convert it from PWM to lower rate with an adapter if all else fails

First, the ram voltage. Some motherboards and/or some ram you have to do that. 1.38 is fine, you can run all day as high as 1.4 no problem.

As for fans, my best recommendation is get get quieter fans. Check the DBA of them on newegg, even if you buy from Amazon or the like.

 

[Fanatical Meat]

Yeah first make sure GPU has power, then make sure you plug the monitor cable into the graphics card, not the motherboard.

This, make sure whatever is plugged into the cpu is marked for the cpu and whatever is plugged into the card is NOT labeled CPU