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Removal Guys Cracked my iMac screen and on boot up i can hear the boot up sound but just all white screen but goes away after leaving on for about 1-2 minutes and then works normally,but on restart back to white screen again. looking to know before i start replacement of screen is there anything else i should do to identify if i have another fault. Any help would be gratefully appreciated. Stephen

A white screen is usually associated with a hard drive issue. Tell us about the drive, if it has been replaced, what operating system you are running and what drive was installed. Are you getting a lot of fan noise?