flashing lights

I have a Gigabyte 3060ti Gaming OC, a Ryzen 5 5600x and a EVGA 600B power supply, and my GPU is currently flashing, but I've only really seen it flash when I am playing Yakuza 0, it is not a very demanding game, and as far as I can see, it only uses 140W of power, but whenever I test it out in...

What do these lights mean? My PC also shows no display on the monitor and i don't hear any beeps(a speaker isn't plugged in if that's the problem for that). Any ideas on how to fix it/get it to boot? My parts i5 9600k Coffee Lake ASUS Prime z390-A Geforce RTX 2070 Vengence 8 GB DDR4 ram. EVGA...

So I've been getting random black screens on/off for about a year or so along with BSOD's and crashes. Here's a WhoCrashed analysis of the offenders. Can anyone give some pointers on solving it?

Is there a way to recover the windows product key if the computer that had the installation of windows has been completely reset? The hard drive does not have the OS installed and it is like a new drive. I had note with the product key since I was going to reinstall windows on the computer in...