PC smells like burnt plastic

Hi,

I was playing some games then I heard a weird noise for a second on the PC. It immediately shut down.

I tried turning it on again. I found every thing fine - the monitor is ok, the mouse and keyboard shows LED colors, and the CPU case shows that it's on.

I tried changing the HDMI too, but it still doesn't show anything.

But after the shutdown, I smelled some burnt plastic and I am pretty sure it came from inside the case.

My PC temp. that time was 88°c.