ummmmmmmmm, does anyone else use your computer besides you? there are ways to arrange the taskbar so, that it is at either side of the screen, or the top, or the bottom. (click anywhere in it, and drag it to where you want it next, just like you would do with a window).
but this, is unlike anything I have ever heard before. I really dont know how to explain the windows flashing, except maybe something has happened in the window, and you had it minimized? what kind of programs were you running, that their windows flashed?
but some advice for the future: NEVER, EVER, turn your pc off, by holding down the power button!!!!!!!!!!!!!!!! this shuts down, without saving data, and is known to be a cause of computers working improperly. did you start shutting down in this way, a month or more ago?
