My Proxmox (Qemu) uses the i6300esb watchdog device driver. Windows shows the Watchdog Timer device under Device Manager.
How do I test this? I tried disabling the watchdog device but nothing happened after a few minutes, so that didn't work.
The ONLY relevant result I can find is a 20 year old topic on the Red Hat forums, stating that this driver is broken and should not be used:
