If you hear a scratch that repeats exactly (tick-tick-tick-buzz), your CPU cache is unstable. If you see rainbow-colored snowflakes on the screen, your VRAM is unstable. Reset your BIOS to defaults and test again.
The "Windows" logo in the bottom left didn't just stay still. It began to bleed. The four colors ran together into a muddy, bruised purple. A system notification popped up, but the "Close" button was missing. It simply read:
Windows has a feature called "Fast Startup" (a hybrid hibernate mode). When enabled, your drivers don't actually reset when you shut down. If a driver enters a corrupted state, it stays corrupted across reboots. This leads to the "crazy error scratch" appearing randomly after waking from sleep or during the second boot of the day.