A bus fatal error was detected on a component at bus 0 device 0 function

If you have access to iDRAC you can check the device corresponding to "bus 0 device 0 function" in inventory and try to remove that device (If it is a PCIe add on controller) and check the behavior. You can also configure the system to minimum to POST and see whether the error is coming. If the error is not coming then you can add one component at a time to isolate the device with the issue

Minimum to POST configuration is the configuration that has the minimum components required to complete POST. Typically, the minimum to POST configuration is PSU1, CPU1, memory module in A1 slot, and the default
riser without expansion cards.