BB Curve 8500 :: After Activating Automatic Memory Cleaning My Wont Start - 8520

i got my BB last week ok, so, i got invited to a group, i was the 30th member, the chat and images uploaded were loading so my BB started lagging ALOT, i thought it was other thing, so i googled "how to make blackberry faster" and i found an "activate Automatic Memory Clean" thing after activating it, i locked the BB cause i always lock it, then a message popped saying something like "blackberry is rebooting and it will take a few moments" well the few moments were more like a few 10+ minutes, so i took the battery out to restart it, after that a white screen with the loading clock icon appears, then suddenly the screen goes black and red light flashes a bit, then back to the white screen with clock, and so on