Question No Signal on screen (Gigabyte Z390 Xtreme + Nvidia RTX 2080Ti FTW3)

[modeonoff]

Hi, besides the issues I had when I first got the motherboard, my computer had been working fine for months without issue until today. Last night under Windows 10 I put the computer to sleep. (I think I had done that in the past without issue. Not quite remember.) When I tried to wake the computer, "No signal” error showed up on the screen. I hard pressed the power button of the computer for a few seconds and turned it on. Same error. I noticed that on the mb, he code was A0. I repeated force turning off and turning on again several times. Same issue but code on the mb changed to 66. I unplugged the power cable, waited for about 10 seconds, pressed the power button, plugged the power cable back and turned on the machine. Same No Signal Error. Repeated again but no improvement. Changing the video output from Nvidia RTX 2080 Ti FTW to iGPU resulted in the same issue.

Pressing the reset cmos button on the mb or shorte the reset cmos pins caused the system to reboot automatically for about three times but still No Signal on screen. Error code changed back to A0.

No update on BIOS. Still under the original one that came with the mb when it was released.

One time removing the GPU and resitting the RAM solved the problem but when I put everything back, No signal error showed up on screen again. While keeping the monitor connected to the iGPU's HDMI port all the time, unplugged the GPU had the issue solved but when I plugged back the GPU in, no Signal again. Tried 6-8 times already. Same issue. No GPU->Works OK. Plugged in GPU->No signal again.

Reloading default BIOS settings does not help.

What is happening here? Could you please let me know how to fix the problem? Thanks

 

[EightBitRanger]

I also had a hell of a time with my Z390 Aorus Master when I first got it. I don't remember what I did now to get it working but eventually I did and it worked fine up until recently. While swapping my CPU cooler, I accidentally scratched my motherboard which caused two DIMM slots and my PCIe slots to stop working which meant no dual channel RAM or no using a GPU. Sent the board off for repair, got it back saying everything was working fine and while the RAM problem is gone, I'm back to the same problem I initially had with my brand new board; no GPU being detected in BIOS in either of my PCIe slots. I popped the card in a different computer and it fired up no problem so I know its not the GPU. But now I can't figure out if my GPU problem is related to the damage I caused that Gigabyte didn't/couldn't fix, or if its a similar issue to when I first got it.

 

[modeonoff]

I also had a hell of a time with my Z390 Aorus Master when I first got it. I don't remember what I did now to get it working but eventually I did and it worked fine up until recently. While swapping my CPU cooler, I accidentally scratched my motherboard which caused two DIMM slots and my PCIe slots to stop working which meant no dual channel RAM or no using a GPU. Sent the board off for repair, got it back saying everything was working fine and while the RAM problem is gone, I'm back to the same problem I initially had with my brand new board; no GPU being detected in BIOS in either of my PCIe slots. I popped the card in a different computer and it fired up no problem so I know its not the GPU. But now I can't figure out if my GPU problem is related to the damage I caused that Gigabyte didn't/couldn't fix, or if its a similar issue to when I first got it.

In my case, it is not GPU not being detected but it prevents even iGPU from functioning. As I plugged and unplugged the GPU, I had the external monitor connecting to the iGPU all the time. No GPU->Has signal. With GPU->No signal from even iGPU.

 

[EightBitRanger]

Under Peripherals, what's the Initial Display Output set to? And under Chipset, is Internal Graphics set to Enabled, Disabled or Auto?

 

[modeonoff]

BIOS Ver.F4

Under Peripherals, Initial display Output is set to : PCIe 1 Slot
Under chipset, Internal Graphics is set to: Auto

 

[EightBitRanger]

Did you try switching initial display to IGFX? If you have a GPU in slot 1 and initial display as slot 1, it's going to initialize that gpu and turn off the integrated graphics. That's why you're getting output there with no gpu, but no output with a gpu.

 

[modeonoff]

Where should I check for "Under Peripherals" and "Under Chipset"?

Did you try switching initial display to IGFX? If you have a GPU in slot 1 and initial display as slot 1, it's going to initialize that gpu and turn off the integrated graphics. That's why you're getting output there with no gpu, but no output with a gpu.

Thanks. That makes sense. I have not tried switching initial display to IGFX. Does IGFX means iGPU? I want to use the Nvidia RTX 2080Ti GPU all the time.

I did not make any change two nights before. Why all of a sudden this happens? How do I make the GPU works again?

 

[modeonoff]

Switching initial display to IGFX has no effect. Resitting thr RAM and GPU and CMOS also does not solve the problem. As soon as I plug the Nvidia GPU back to the motherboard, there is No Signal error regardless of whether I connect the display via iGPU or Nvidia GPU.