Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

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White screen but shows on external display perfectly?

i ordered a imac the screen shows white but it shows on another display perfectly. would it be able to fix with just replacing the Screen or No?

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Can you discern the desktop at all? Please give us the last three figures of your serial number (located on the bottom of your stand).

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Hi David. I am having the same problem now with the same iMac model. Screen is totally white but everything else is working fine. I am using the iMac via Screens (Back to My Mac & iCloud) using my wife's MacBook.

Have you resolved the problem? I am guessing it's a screen/hardware failure and needs to be repaired or replaced.

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hi...did u fix this problem, i have on mine too :(

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Yeah I did I just replaced the screen and it worked. Apple was charging me 400 to replace it, but I bought a oem screen from eBay and did it myself

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This can be caused by a bad hard drive believe it or not. Remove the drive and see if it will boot from your system installation DVD. For assistance getting to the correct guide, please give us the last three figures of your serial number located on the bottom of the stand.

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thank you very much

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Apple iMac "Core 2 Duo" 2.4 20-Inch (Al) Specs

Identifiers: Mid-2007 - MA877LL - iMac7,1 - A1224 - 2133

Here's how to replace the hard drive: iMac Intel 20" EMC 2133 and 2210 Hard Drive Replacement

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can I boot from USB drive or do I need the disc ?

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I know you can boot from an external firewire drive. I don't know if this model will boot from a USB drive.

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I'm using the computer right now perfecting on another monitor being mirrored. it has lion installed I tried the steps above but still showed white screen, it shows white screen and you can hear the boot up sound. so do you think it is a LCD replacement ?

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David Zamora will be eternally grateful.
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