hi my acer 5920 when turned on is saying windows could not start up click to repair onced clicked it shows me a screen with a little tool bar moving across it and says this may take over 1 hour to complete but i have left it for hours on and it does nothing. if at the start up i click start up normaly it gives me an error code of 0xc0000102 and then does nothing can anyone please help me thanks!