Details: - White MacBook Unibody [2.4GHz, 4GB RAM, 250GB HDD] - Samsung 24" Monitor [SyncMaster 2433BW] - Mini Display Port to DVI adapter I have searched the internet and tried all possible solutions to no avail. My monitor jut blinks a blue LED indicating it is searching for a computer. Detecting monitors on the Mac does nothing and I cannot seem to get this working no matter what I try. The only thing that worked once was what this: 1. Turn off your laptop, hold Shift + Control + Option and then Power (Note: it doesn't look like anything is happening but it is, ie.) you won't see anything and Mac will not start) 2. Laptop should still be off, then hit Command + Option + R + Power. Still holding these down when you see the Apple logo appear, press down P. You should hear the Apple chime twice and then you can let go. 3. Shut down your laptop, make sure it's pugged into A/C and your external monitor is connected. Press Power + Shift at the same time, which should start you off in Safe Mode and you should see your external display come on also. 4. Now you can restart your machine normally and it should all work for you If anyone has a suggestion that would fix this permanently, that would be great!