Problem with application !!!Urgent need Help please!!!

Hello i am trying to make a 2d sprite engine. I have a serious problem. When i start the application sometimes the screen is just gray. and no matter how long i leave it it just stays gray however every now and again if i run it works fine. this is realy troubling me i cant understand it.
I am try to use a double buffering strategry and also am storing images on accelerated memory if someone could please help me this would be a great help

...you will have to post some sample code, i really can't make heads and tails of it with the given information...

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    Distributed Database Consulting, Inc.
    www.ddbcinc.com/askDDBC
    Justin
    Distributed Database Consulting, Inc.
    www.ddbcinc.com/askDDBC

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