Question PC just died and need to know why

[Magmacream187]

I recently upgraded my pc with a ryzen 5 3600 and new ram. Everything worked fine for a couple of days until today while playing fortnite and messing with settings the screen turns off but fans and stuff still spin. I turn off the pc and then turn it back on. Fans spin, leds light up on motherboard and graphics card, but fans dont spin on the graphics card and it doesn't post. The speaker also doesnt make any noise. My power supply is some kind of rose will 500w with no 80+ efficiency rating. I took out the gpu and tried to turn it on and peripherals dont light up and no speaker noise. It's on carpet floor but I have it on concrete blocks so it's not directly on the carpet. I've been monitoring cpu temps and ryzen master says that temps never get above 80 degrees celcius , but I always thought GPU temps were fine because I monitored them before I upgraded my parts but I have been pushing my pc a lot harder since then by doing things like putting settings on max. I'm thinking some kind of power shortage that broke my whole pc or my new cpu is dead. Thanks for any help you can give.
Mobo: Asus tuf b450 plus gaming
Gpu: powercolor red devil rx 590
Old cpu: ryzen 3 1300x
New cpu: ryzen 5 3600
Powersupply: random rosewill 500w
Hdd: wd 2012 1tb
Old ram: 1x8 corsair vengeance 2400mhz
New ram: g.skill ripjaws 2x8 3600mhz c16

Sorry for bad capitalization I'm not on my pc for obvious reasons

 

[Magmacream187]

Hey guys, an update from a couple months later haha. I sent the board back to asus and they gave me one for free. THE COMPUTER WORKS! It's still running a little toasty, but I'm gonna get another fan and try to make temps lower. Thanks for all of the help.

 

[Karadjgne]

Cool. 👍