PC stuck in bootloop after windows update

[skaare]

After my PC had been on for roughly three weeks while i was away for work, i rebooted it to finish some windows updates. When rebooting it got stuck in a "bootloop" where it doesn't post and continually reboots every 8-10 seconds. There is no display output whatsoever from the GPU or the on-board graphics (tried with both DP and HDMI outputs), and the CPU Q-Led on the motherboard is lit up red. At this point the PC has probably rebooted hundreds of times and not one of them has resulted in it posting. These are the troubleshooting steps I've taken so far:

 

- Re-seating the CPU and cooler (I am using a Thermal Grizzly contact frame, haven't tried reinstalling the ILM yet)

- Updating the BIOS to the latest version.

- Moving the RAM around and running only 1 stick in various slots.

- Unplugging the GPU from power and PCI-E

- Removing the SSD's

- Tried with the motherboard out of the case and only CPU and RAM installed, confirmed the CPU gets warm and the CPU Q-Led is still on. Also re-installed the ILM for this step.

 

At the moment i'm leaning towards the CPU being dead, and according to the very basic troubleshooting guide Asus provides based on the red CPU Q-Led they seem to agree. I do not have another one available to test with so i would halve to buy a new one to do that. The build is roughly 1 year old, and was build by myself.

 

PC Specs:

CPU: Intel Core i7 13700k

 

MOBO: Asus ROG Strix Z790-F Gaming Wifi

RAM: G.Skill Trident Z5 RGB DDR5-6000, 2 x 16gb

GPU: AORUS RTX 4080 Xtreme WaterForce

Storage: Kingston KC3000 NVMe, 2 x 2TB

PSU: Asus ROG Strix Gold Aura Edition 1000w

CPU Cooler: Asus ROG Ryuo III 360 ARGB

 

Case: Lian-Li O11 Dynamic Evo

OS: Windows 11 64-bit

 

 

 

 

[skaare]

For anyone wondering, it was the CPU. Went out and bought a 14700K and it works now.