All i get is a white screen and a file icon with a ? in it

I turn on my computer and my screen turns white and then a folder icon with a ? just starts blinking .... how do i fix it ...what happend?

I had that the other day. There's a kb article here: http://support.apple.com/kb/TS1440
In my case, I used the OS X install disc, loaded up Disc Utility to verify the disc and then went to Startup disc to make sure that the HD was selected. Rebooted and all was well.
Still don't know what caused it but those steps seemed to fix it. Hopefully it will fix yours too!

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    Hi Shahenaz,
    It's a little difficult to understand exactly what's going on with your mac based on the description you gave. Is there anything else you could add? Is it stuck in a reboot loop? Or is it just showing a white screen forever?
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    Once this is done, select Shut Down from the Apple menu and, once your Mac is completely off, turn it back on like normal. If it works, great. If not, proceed to step two.
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    Turn off your Mac, and reboot while holding Command, Option, P, and R, and continue holding them down until you hear the computer restart again.
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  • My new mac mini (3 month) didn't start up,all that appeared was a white screen and a flashing folder with a question mark inside it.

    My new Mac mini (3 month) didn't start up, all that appeared was a white screen and a flashing folder with a question mark inside it.
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    Your Mini (running 10.6.4) should have come with grey-colored install disks. Now is the time to put them into service. Turn on your computer so that there is power to accept disk #1 into the optical drive. Once  the disk is in the drive, shut off the computer by holding the start button down until it powers off. Then turn it on this time holding down the "C" key to make the computer boot from the disk. The question mark that you saw indicates that the computer cannot find a bootable volume. This can happen due to corrupted system files or an improper shutdown etc. Once you are in the "Installer" you can choose Disk Utility from the Utilities Menu in the menu bar. Use it to repair the disk and to see if that can solve your trouble.  

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    2012/13 MacBook Pro froze up, so I did a hard shut down. Now, when I try to start up, it makes 3 unusual beeps, then I get a white screen. After a couple minutes, a flashing file folder with a question mark appears and remains. What is wrong and what can I do to fix it.

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  • When i press sleep wake button to turn on my iphone 3gs all i get is a white screen

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