e250 doesn't respond

[AznFriedRice]

I installed Rockbox few days ago with the automatic installer, and it worked out fine. But today it just suddenly stopped and power off. I press the power button but it doesn't respond. I plug in the USB charger and it still doesn't respond. Please help me guys.
Also computer doesn't show e250 is connected. Nothing is shown.
Thank you so much.

***** PROBLEM FIX

SOLUTION:

Try holding down the power button for >15 seconds, and then powering it up again.

Allegedly it's possible to 'hang' a sansa in a state where it looks like it's off - but it isn't really. Doing the above should reset it and let you power it on again if it's in such a state.

Thank you GodEater!

[MarcGuay]

Put your headphones on and hold the menu/power button until you hear a "click".  This could take upwards of 30 seconds and will hard-shutdown the device, allowing you to start it up again.

Variation on a saying:  Search first, ask questions later.