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Macbook pro 3 beeps no startup10/31/2023 ![]() ![]() While you have the RAM out take a photo of the label, it should say how many GB each chip is and what type i.e. ![]() I could not describe it better than this iFixIt guide: Get the hottest tech stories of the week, plus the most popular reviews delivered straight to your inbox.There could be a large number of issues, but as you've said it could be the RAM chips, we should start with the possibility that the RAM has become loose, you should try reseating the RAM. Sign up for TechRadar's free Week in Tech newsletter Liked this? Then check out The complete guide to AirPlay To remove the password, boot from the OS X DVD choosing Firmware Password Utility from Utilities. If you want to boot from another drive, hold Option at startup. Some of these won't work if you've enabled a firmware password. X: Force Mac OS X to boot (if you've got other OSes installed) Hold down these buttons at startup for the following functions. You can then copy your files off it and back them up. Then plug a FireWire cable between your Mac and another - yours will appear on its desktop as a removable drive. ![]() 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. If your Home folder was encrypted with FileVault, and you don't have the password, your Home folder's contents will be gone. In the Installer's Utilities menu, choose Reset Password. If none of this helps, restart with the OS X DVD, holding down C. In FileVault this button is labelled Reset Password. ![]() If you are the main administrator, try the Forgot Password button on the login pane. The main administrator can change passwords in System Preferences > Accounts. ![]()
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