Aisey, both UPS kongs coz they died saving your system, so when you run w/o your unstable electric supply terus kill your PC directly. You change CPU/mobo also just waiting for next blackout to die. Maybe even more as your PSU might have ady been compromised so it could die too. You get a new system also just waiting for it one day.

Sorry to say lar but this is what i see happening.

In this case your problem isnt a new CPU/mobo but you first need to somehow improve your house electric supply since UPS also easy to die. Maybe home power isolator or something. Just my 2sen take it or leave it.

For what its worth you can do some simple troubleshooting.

Most (if not all) mobos have POST status LEDs and some other functions during startup ie fans will spin. Try see if these work when you press ON.

If not, and you see/hear nothing happen then confirm mobo kong dy. Move on to try with another mobo to see if CPU also konged.

If yes, see the POST LED status where it cycles to, if it goes past CPU it should "normally" mean CPU function is okay. Then perhaps need to see if your mobo igpu output fried by switching to another video port or use a GPU to test. If the LED is stuck at CPU that usually means CPU kong.

For reference
https://www.cgdirector.com/fix-red-cpu-light-on-motherboard/

when psu on, mobo led got light...
when power ON, cpu fan will run...
but monitor black show no signal...
want see is hdmi port kong or not,
i try remote access, but it show system no ON....
so i suspect Mobo kong...
i dont have GPU...

when psu on, mobo led got light...
when power ON, cpu fan will run...
but monitor black show no signal...
want see is hdmi port kong or not,
i try remote access, but it show system no ON....
so i suspect Mobo kong...
i dont have GPU...