pc dont boot

My specs: CPU: Amd ryzen 5 2600x GPU: Asus tuf 1660super motherboard: old: msi b450 gaming pro carbon max wifi, new: MSI B450 TOMAHAWK MAX AM4 Memory: Corsair Vengeance LPX DDR4 3200 MHz 2x8gb PSU:Seasonic FOCUS GX-550 gold Hey! As I played csgo for 5 minutes suddenly my computer shuts down. I...

Wen i turn pc on and wait litle bit then sameting shows up on screen and i can't fix it already asked help in other forums they seys change psu if that dont help change motheboard but that dont help me Image wat i see in screen

Hi Are motherboard standoffs standard in size ? I mean would any standoffs fit any PC case and any motherboard or is there a specific length, diameter or thread specific to each PC case or specific for each motherboard ? If standard, what are these sizes (length, diameter, thread) as I'd...