Question New PC build - Freezing & Crashes

[Whitlam]

System will freeze / crash when launching or running games. This also rarely occurs when streaming video and browsing web (Firefox / Edge).

Temps seem to be fine on GPU and CPU.

PC BUILD:
OS: Win 11 Home
Motherboard: Gigabyte B760I Aorus Pro
CPU: Intel i5-14400F
GPU: AMD Radeon RX 7800 XT (powered through 2 separate PCIe cables)
RAM: G.Skill Trident Z5 RGB Series (Intel XMP) 32GB (2 x 16GB)
SSD: Samsung SSD 980 1TB
PSU: Corsair SF850L Fully Modular
Cooling: 2x Mobius 120 OC Case Fans
There are 2x monitors one through DP > HDMI and the other HDMI > KVM switch HDMI then KVM HDMI > HDMI. Not sure if this is related.

I have not made any changes through the BIOS menus (thinking there is maybe something there?).

Drivers have all been updated as at 10/01/2025.

I've checked the Event Viewer, but not sure if this actually assists in diagnosing the problem.
Event Viewer:
Critical: Event 41, Kernel-Power - The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

There are also some non-critical errors that are appearing if required.

Any assistance would be greatly appreciated.

 

[helpstar]

did you connect both connectors on the psu side which are split for the main 24pin power connector on the motherboard side?


update BIOS of motherboard