Issue with starting the computer.
Issue with starting the computer.
I previously installed a new motherboard and upgraded some RAM. All my PSU, CPU, GPU, and HDD remained unchanged. Now I’m facing problems. The PC restarts three times: first two it powers on and shuts off, then again once more. The third attempt it stays on. I’m hoping this is normal. My monitor sometimes shows "No Signal." I inspected the HDMI cable and other connections, even tested different cords, but nothing worked. I made sure the GPU was firmly seated—nothing seems amiss there. I suspect a PSU problem, possibly insufficient power. I double-checked that all cables were properly connected to the motherboard. All USB ports function correctly, and my mouse works in every slot. I also tried using another monitor, but it didn’t help. I’m leaning toward the GPU being the issue, though it’s still unclear. It might be a defective motherboard. I’m quite uncertain and would really appreciate any advice! My thoughts are split among PSU, motherboard, and GPU.
What are your full specifications? Is the system running without a dedicated GPU or with just one memory stick (even if you have more)? When it fails to boot, no output appears, not even the startup BIOS screen? Are there any indicator lights on the motherboard that activated? Would resetting the BIOS help?
I have a setup with a GTX 1080 Founders 2TB HDD, 32 GB RAM, Corsair 4x8GB sticks, and an 850W PSU. The motherboard is an Intel i7-6700k CPU with a Dark Rock Pro 4 cooler (250W TDP). The case uses Cooler Master H500. There are LEDs on the CPU showing DRAM, VGA, and Boot status. The CPU lights red, DRAM yellow, and Boot yellow-green, but VGA stays off and Boot doesn’t light as expected. This causes crashes and a boot loop. I’m having trouble accessing the BIOS screen.
Ensure the monitor is connected to the motherboard. Go to BIOS settings and configure the GPU as the primary display.
Z390 doesn't work with the 6700K chipset. It's designed for 8th and 9th generation processors. The problem lies there.