Question Tried to boot the pc after two weeks, it booted up normally but in a minute it shutdown and small explosion sound was heard. Please help

May 31, 2020
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Today, I turned on the pc after two weeks ,it booted up normally , but in a minute i just shutdown and a small explosion sound was heard from the CPU i donno where specifically it is. Please help ! I just replaced my PSU with a 400w normal one 4-5 months ago