Well, that's terrifying. Horribly cheap group-regulated junk. Not surprising to see it melt down in a PC with a real GPU.
Like a lot of dodgy cheap PSUs sold in Eastern Europe and South Asia, it appears to have a fake 80 Plus badge. The 80 Plus people have nothing about this power supply in their certification database.
A proper PSU is a must, but the question here is whether it's *just* the PSU that died, or whether the garbage PSU took some components with it to its inevitable grave. Would need a real PSU to find that out.
It's too bad that when asked in your last two threads when you were having problems, you ignored all requests for information about the PSU; people suspected a junk one. All you said was "sufficient" PSU. It wasn't. And like most problems, ignoring it didn't make it go away.