Why is that whenever there's a power outage or whenever I restart my computer sometimes my iMac wont completely load up? It will just  show a blank white screen. It will do that for a few days until it decides to fully load up.

Why is that whenever there's a power outage or whenever I restart my computer sometimes my iMac wont completely load up? It will just  show a blank white screen. It will do that for a few days until it decides to fully load up.

First step would be a PRAM reset.
http://support.apple.com/kb/ht1379
Post back if that does not work.
The next step would be to try "Repair Disk".

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    First of all, are you aware that Spry is a dead technology and the code you're wrestling with is over 7 years old and will not work with mobile touchscreen devices (essential in today's web world)?
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    If still a problem you likely have hardware problem and an appointment at the Genius Bar of an Apple store is in order.

  • Hey! I don't know if my MacBook Air is frozen, but the screen is gray with the apple logo and an icon below turning round and round as if it's opening, but has been like that for a few days. I've switched it off and then on again several times, still the

    Hey
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    Take each of these steps that you haven't already tried. Stop when the problem is resolved.
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    The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.   
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    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
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    Repeat Step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
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