I upgraded to lion and have only been able to boot up in safe mode. However now when rebooting it automatically boots up on safe mode. When the progress bar gets to about 1/3 done the screen goes black. I have tried unplugging my peripherals and turning off my Bluetooth Magic Mouse during the reboot. I have an apple aluminum keyboard connected by USB. Am at wits end and feel I may be at the point of having to take it in to get serviced. However, will most likely be too expensive and will have to get a new one. Any suggestions? Thank you!