If that doesn’t work, you may need to reinstall your OS through the recovery menu. Barring that, take it to an Apple Store and have them look at it. Can I run my Mac in safe mode all the time?

Booting in safe mode to resolve login issues Several users with login problems (usually startup getting stuck at the login screen) after applying the Mac OS X 10.3.4 update report that starting up ...

Safe Mode in OS X is a good troubleshooting environment; however, sometimes people might find it difficult to boot to Safe Mode using the standard Shift key press at bootup. Topher Kessler ...

If your Mac is having issues, starting it in Safe Mode can be a good way to troubleshoot it. Safe Mode starts your Mac without starting any other programs, so you can test whether it's a program ...

Apple includes a Safe mode in its Mac startup options that can help you work out if a problem is being caused by software that loads as your Mac boots up. It's particularly useful for resolving ...

Blogger Andrew Escobar describes a Mac hack that can take advantage of Mac's new Safe Sleep functionality. While Mac users have enjoyed the quick luxury of Sleep mode for some time, Macs have ...

So I started it in safe mode. computer works okay. still tons of graphics problems, but less that before. and I can use the computer. So I pulled all my login items out, uninstalled preference ...

The troubleshooting mode of an operating system. By pressing a particular key after the computer is turned on, it allows the system to boot with only essential components such as the OS kernel and ...