SMBus Controller disappeared

After a risky movement. Boot a PC generated a horrible noise (crackles, long search for the floppy). Then, the SMBus Controller was declared invalid in the Device Manager (question mark in yellow in XP).

I uninstalled and then disabled. I know I should not have.

In my doubt I wonder today especially on the audit: "PCI Device Listing" BIOS POST.

The controller is rated #NA# for its IRQ (in the full listing screen Devices PCI BIOS POST), something I had never noticed.

It crashes my system to boot quite often.

How to reinstall?

Reinstall the chipset driver of your motherboard.

Sorry. However, I reinstalled the chipset drivers for my motherboard. The SMBus Controller is no longer anywhere.

I would like to know if the #NA listed in the BIOS POST is customary.

Clear CMOS, or reflash the bios.

If it does not solve the problem then it's a hardware problem and not software (since it happens before the boot)

You can tell if you have a IRQ number other than "NA" for SM Bus Contrlr in the PCI Device listing STP?

it actually happens before the boot of Windows.