I'm using an Acer Aspire One D250 running 11.04 (natty). Lately I've been having a problem with the screen every time I turn my netbook on, where it just flashes a series of colors and gradients (seems like some sort of test/diagnostic). Sometimes it goes away, before the login screen appears, sometimes it doesn't (I just hear the prompt coming from the speakers). Occasionally it will go away after I log in and the system boots up fully, but that's less likely.

Please help, as this is very frustrating and keeping me from getting my work done. Let me know if there's any more information you need.