Picture 3 is an animated gif showing how far the module is being pushed down. Did you use this instructable in your classroom?see url
How to fix Mac startup problems
Add a Teacher Note to share how you incorporated it into your lesson. By graviousinstructables Follow. More by the author:. It was always slot 0 that had issues of need reading the memory. When i tried the old memory or just slot 1 then everything worked. Read on a thread it was how certain memory gets seated into slot 0 that causes it not to work. I went through 2 brands of memory both had similar problems when seated into slot 0. They both worked in slot 1 alone but nothing when in slot 0. Asked 6 years, 11 months ago. Active 5 years, 1 month ago.
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My iMac beeps on startup. Does anyone know the beep codes? Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. If you're still having trouble, hold down Shift as you switch on your Mac to perform a Safe boot. No luck?
imac - My Mac repeatedly beeps three times on startup. What does this mean? - Ask Different
Release the keys when you hear the startup chime the second time. Run the disk and permissions repairs, repeatedly, until you get the all-clear. If it still won't boot, restart with your Applications Install disc in the drive and hold down D.
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Run the Apple Hardware Test. If it finds problems and the component is removable, remove it and see if this helps. If you are the main administrator, try the Forgot Password button on the login pane. In FileVault this button is labelled Reset Password.
Could Not Write Installation Information to Disk
In the Installer's Utilities menu, choose Reset Password. If your Home folder was encrypted with FileVault, and you don't have the password, your Home folder's contents will be gone. To back up your files in Target Disk mode, hold down T as you switch on your Mac until the FireWire icon appears on your screen. Then plug a FireWire cable between your Mac and another - yours will appear on its desktop as a removable drive. You can then copy your files off it and back them up. Some of these won't work if you've enabled a firmware password.
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