Today a strange thing happened.
My pc's all cable like cpu power cable, monitor power adaptor and routers power adaptor all are plugged into an extension board and extension board's wire goes into wall. Today voltage in my house significantly increased and my extension blown off. I didn't aware of the fact that my house voltage is increased. When I came to my room and see that light was not there on my extension. But I have to work urgently on a Excel sheet. So I plugged my pc and monitor cable directly into the wall socket. And I heard 2 bursting sound from my POWER SUPPLY UNIT and burning smell. I got scared off and immediately turned of the wall socket and unplugged the pc cable. I didn't know about high voltage yet. After 1 hour again I plugged my pc into wall socket and again heard 2 bursting sound and burning smell from PSU. Now I aware of the High voltage. I immediately contacted electricity authority of my area and get the problem sorted out. After voltage problem got solved, I am damm sure my pc is dead. Out of curiosity I plugged the pc and monitor cable into wall socket and guess what pc and monitor working fine. All components of my pc are working fine. After that I played 2-3 hrs games like warzone, cyberpunk and I didn't notice any issues and run some benchmark software all working fine. I wonder what are those bursting sounds from my PSU and burning smell. Do I need to change psu ?
PSU - Cooler master MWE 650 watt 80+ bronze