Try unplugging the power, holding the power button for a solid 10 seconds, plugging it back in and turning it on. Feels like magic, but it clears out the capacitors and has helped me in a few Jams. Also, if you haven’t already, unplug the HDD.

That’s gonna be my version of old people saying “I don’t do computers” now. There’s no goddamn way I’m putting a chip in my brain.