PC exhibiting Strange behaviors when idling. Advice?

About 3 days ago I went into Armoury Crate to adjust some of my lighting settings, and ever since I made those changes, my PC has been showing some weird behaviors. The lights and fans all turn off, but the activity light on the power button remains on, and when I move the mouse or press a key, it brings me to the Windows login page. Any advice is appreciated.

(If it matters, I have an Intel i5 11400F, RTX 3060, ASUS G10CE, and 2 8GB sticks of SK Hynix HMA8 RAM. The CPU idles at 45 C, the GPU idles at 25 C.)