My dad's S7 Slim stopped responding yesterday. When he got home, it wouldn't go past the initial vibration and flashing the IDEOS logo. Even without having the power button pressed, it kept at it on a loop. We managed to turn in off, but that's all it does. We tried pulling out the battery for a few minutes and then trying again, to no avail. Plugging it in doesn't work either. I tried to reset it by pressing the power and Vol down buttons at the same time, and now it only shows a white bar (which I assume should be loading, but it's not) and the home, menu, and back buttons flashing constantly. Any insight, guys/girls?