PC not booting. Motherboard ethernet light keeps blinking.

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abtrek

New Member
Mar 30, 2021
2
0
1
Texas
I bought a new GPU today to replace one of my old ones on my pc. After turning the pc off and installing the new GPU, the pc won't boot. It won't even make a sound. The only thing I see is the ethernet light blinking on and off (even though I haven't connected an ethernet cable to it).
This has happened to me in the past. I solved it by removing the CMOS battery and the PSU cable and waiting for some time. Then after reinserting them the ethernet light would not blink and by pressing the power button the pc would boot. This won't happen now. No matter how many times I've tried, the yellow ethernet light keeps blinking and the PC won't boot. I've tried removing most pc components like HDDs and GPUs and ram and the same thing persists, as long as the yellow light is blinking, the pc won't boot.
I'm 95% sure my motherboard is at fault, though I didn't change any other parts other than removing one of my two GPUs and adding a new one. Yes I also tried removing the new gpu and it still won't boot.
The motherboard model is asrock x99m killer. Any ideas? Thanks in advance.