Mac OS X blue screen at startup is a major issue nowadays. Supposing you notice blank blue screen or blue screen having colorful pinwheel if the computer is restarted. If starting up does not go ahead you may face problem of software crash or corrupted start up items. You may solve this issue via many avenues. The solution of OS x blue screen at startup is achieved through simple and advanced techniques. Many a times it happens that the computer is not in a position to boot up and blue screen is displayed. After that the next process ahead does not seem to occur. As you are then not capable to go ahead, you may not access your data. As a remedy of this OS X Blue Screen at startup, you should attempt to boot the computer in a safe mode. You can opt for Apple menu following restart of computer to verify if computer restart is normal or not. OS X blue screen at startup problem may be identified as occurring because of incompatible log in items. One should remove such log in window which demands name and password if the start up process may not move ahead. Only installation disc should always be used to start your mac and disk utility might be utilized to mend disk permissions and boot up disk. It is likely that these steps may go in vain . Lastly, you can utilize installation disc to reinstall Mac OS X and then restore the data from back up. If your back up is unavailable try Mac Data Recovery Software. It helps in recovering lost files and folders if your Mac systems has any sort of logical crash.