CPU Debug red light
CPU Debug red light
For the specifications they are listed as below
Processor: i3 8350k upgraded to i7-9700k
Memory: 8GB RAM
Motherboard: MSI B360M GAMING
Power Supply: Fractal Design 450W Integra
Graphics Card: GTX 1060 6GB Palit
Storage: 1TB Samsung EVO 970
I changed the CPU and had to update the BIOS to support the new model. I purchased a new computer in late October/November, unable to recall the exact date, and chose to give my younger brother my old machine since it was still functional. Unbeknownst to me, he attempted to work with the BIOS because temperatures were high during games—when they were normal around 65°C—and he wanted to disable CPU turbo boost. He updated the BIOS by mistake, which caused it to stop recognizing the CPU and display a red light on the EZ DEBUF screen (even though it would boot but not show anything). The PC still didn’t boot properly, and I couldn’t access BIOS. Knowing it wouldn’t support the i7-9700k after clearing the CMOS (restoring BIOS to defaults), I replaced the CPU with an i3-8350k, but the issue persisted. I haven’t fully removed the CPU’s heatsink, though it still touches the chip, and I believe it should at least be recognized by BIOS/Windows if temperatures were higher. I’ve tested both CPUs, tried booting without a GPU, with GPU enabled, without RAM, and with one RAM stick, but none worked—no display. I’ve also attempted BIOS updates via DVI-D and HDMI cables, yet the screen remains blank. I’m seeking advice on what might be causing this problem, as it was perfectly fine when installed and only a CMOS/BIOS reset was performed.**
And so for an unexplained reason he updates to bios he said and apparently he made a mistake somewhere because it stopped recognizing the cpu and displayed red light on debuf (not even booting up to anything, the pc runs but no display appears at all and I can't access bios). Knowing that it can't support i7-9700k since he cleared the CMOS (restarting bios to default), I found the i3-8350k and tried it in, but the same problem persisted.
It seems something went wrong during the BIOS update. It might be a faulty motherboard. A BIOS chip that's damaged won't work even with a previously functional processor like the i3-8350K.
Have you checked if the pins are bent or broken? If the BIOS is indeed corrupt, you'll need a CH341A BIOS Programming Toolkit and will have to reflash the BIOS from the motherboard's support site or consider getting a Z370/390 chipset board to pair with the i7-9700K.
Clearing the CMOS is recommended: unplug the power supply and display, remove the CMOS battery, hold the power button for 30 seconds to drain any remaining power, then replace the battery after 30 minutes.
there is still a need for mounting pressure on the cpu. the heatsink isn't providing enough heat. fix by attaching the heatsink correctly. add one stick of ram. remove the graphic card and connect it directly to the motherboard.