Question What is wrong with my pc?

Feb 4, 2020
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When I turn my pc on, it works fine, it boots, it plays basic games, I have a ryzen 7 2700x, an asus rog b450-f motherboard and a stand in gtx 260 which is soon to be replaced, I shut down my pc through windows and the fans stayed on, the display turned off, the rgb stayed on and the motherboards indicator led flashed orange for long bursts and beeped while the light was on, the same thing happened when I tried to run warframe, it crashed and did exactly that, what's going on? because I cant crack it