White Screen of Death - NOTHING IS WORKING

Right, I've had my blackberry for a few months now, it was bought from someone else. Only recently, my phone has been turning itself off and giving me the "white screen of death" but I've always managed to get passed it by removing the battery then restarting it.
But today, it has turned itself off, reloaded to the main screen where it then freezes, the screen goes white and it says "app error 523 - reset". Ive clicked reset about a billion times and it keeps doing the same thing over and over again.
Ive been searching on this site all day for an answer but nothing has worked. I downloaded blackberry desktop/device software but it won't find my device. I tried that app wizard loader thing, but that didn't work either.
And yes, my phone is charged.
I am beyond frustrated now, it's seriously p*ssing me off and I need some help!! I can't fill out one of those information things including the carrier, question and whatever else because I don't know any of mine!
Please help me, I am just getting more and more angry!! 

Hey jessmayx3,
Welcome to the BlackBerry Support Community Forums.
I can definitely help you out.  
Follow the steps in this article to resolve the App Error 523: www.blackberry.com/btsc/KB24395
Let me know if you have any more questions.
-ViciousFerret
Come follow your BlackBerry Technical Team on Twitter! @BlackBerryHelp
Be sure to click Like! for those who have helped you.
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