On the said board onboard power and reset switch pins connected to the case front panel no longer work but the on board quick switches continue to function as normal, totally baffled about what might have caused it

- checked power manangement in bios
- tried latest bios (no luck)

Q1. what is wrong
Q2. can I power on the computer from usb mouse click or keyboard as an alternative solution?
Q3. any other solution?

no other problems seen
please help