I boot to reboot my galieo pro and now i have a black screen

Rarely, a Mac may encounter some peculiar issue during system boot that can cause quite a bit of panic, like booting to a completely black screen. It would be easy to interpret that as a potential hardware problem, and in some particularly rare situations that may be the case, but it's more often a software issue that can be resolved with some simple troubleshooting steps.

Case in point; one of our readers experience with his MacBook Pro, which out of the blue rebooted to a completely dark screen. Though it's rare, we figured this would be a good opportunity to share three potential solutions to this problem, and similar issues, should you encounter a dark screen on system start.

First, Reset the System Management Controller to Fix the Black Display on Boot

The first thing you'll want to do resolve nearly every power related issue on a Mac is to reset the SMC, or System Management Controller. This will dump and reset settings for anything power management related, and is long known to resolve problems with things like fans, heat, sleeping problems, and of course, display issues.
On any modern MacBook Pro or MacBook Air with a built-in battery, which is just a bout all of them nowadays, this is how you do that:

1. Shut down the Mac and connect it to your MagSafe adapter and a wall outlet as usual
2. Hold down the Shift+Control+Option+Power button at the same time for a few seconds
3. Release all keys at the same time, then boot the Mac as usual

Older Macs can find directions here for the same process on their machines, it's slightly different if you can take out the battery.
When the Mac boots, hopefully the black screen has gone away and you're back to normal, but if it doesn't... reader Nathan D. wrote in with the next tip.

Second, Try a Keypress Sequence to Ditch the Black Screen

Regular readers may recall that we covered some OS X keyboard shortcuts for the Shutdown, Sleep, and Restart controls of just about every Mac, and this little key press sequence takes advantage of those. Oddly enough, it seems to work to resolve some of the mystery Mac booting into black screen issues. Here's the precise sequence to follow:

1. Press the Power / OFF button once - this will bring up the dialog box which you can't see
2. Press the "S" button - this is the shortcut to sleep the Mac
3. Hold down the Power button until a hard shut down is forced
4. Wait about 15 seconds, then hit the Power button again to turn it back on

This key press solution was discovered by reader Nathan D., who found it tucked away on MacRumors Forums, and it has worked for several other commenters there as well. Some other users on the MR forums suggest that resetting PRAM helped them too, but most power issues are resolved by the SMC reset.

Try a PRAM Reset to Resolve the Black Boot Display

If the above two tricks failed, a PRAM reset can often do the trick, as many of the commenters on this article can attest to. As a potential solution to the black screen on boot, this is done upon restarting the Mac similar to an SMC reset:

1. Reboot the Mac and as soon as you hear the boot chime, hold down the Command+Option+P+R keys together
2. When you hear the boot sound again, the PRAM has been reset so let the Mac boot again as usual

At this point your Mac should boot again as usual and no longer have the black display, loading Mac OS or Mac OS X as usual.

Finally; Enter Password, Hit Return

Some users in our comments report an interesting alternative finding if they hit the black screen on boot; if they enter their regular login password and hit the Enter/Return key, the Mac boots up as usual and they're good to go. Try this out, it might work for you:

1. When the Mac boots into the black screen, enter the password you'd use to login to the Mac as usual
2. Hit the Return key

If this works, you'll know rather quickly because the black screen will give way to the regular Mac OS desktop.
Did one of these solutions work to get past the black screen on Mac boot for you? If you happen to run into this unusual issue with your Mac, let us know how you resolved it, and if the above tips worked for your MacBook, MacBook Pro, MacBook Air, and whichever Pro or Air model it may be. If you still need any assistance call me on +1(518)348-9393 i will be glad to assist you

start in safe- mode and uninstall the display drivers (in device manager) then reboot in normal mode and load new drivers

1.AS soon as your PC starts press f12 to see if the boot-up menu pops up. Navigate to reboot from last good configuration.
2. Boot in safe mode with networking by repeatedly tapping f8. Then download a registry helper like cc cleaner from filehippo.com.
3. If neither of the two options work then attempt to push near the hinges gently to see if the screen flickers. You might have a hardware issue.

-CompDoctor

Try pulling the battery out then holding the power button for 10 seconds. Put the battery back in.

If not search macbook pro recall apple has extended the warranty on some models due to a bad graphics card.

Check by rebooting it to BIOS--Press Del or F1 during boot....
Choose F8 option during startup intial stage-Windows
Choose Safe Mode----If it works---then No Problem with Hardware,,but with Operating System--Repair or Reinstall Operating System using Valid XP Serial Key

Is it possible that you have installed winxp twice? You say that you installed XP Pro sp3 was that an upgrade from xp home? if so then you will need to uninstall one or both versions of XP then install only one.. Make sure you backup any important files first though

Try booting into single user mode by pressing Command+S while booting. You should then be at a prompt. Type in:
fsck -f
and press Return. Let it run and see if it corrects any filesystem issues, then reboot when it's done.

Hi,
Bsod, 2 possibilities, hardware defect, and software problem,So check software.

Re-boot, keep tapping F8 while booting, enter black screen area, choose last known good, top 1

or, reboot again, F8 again, black screen, choose safe mode this time,

if/when booted, system restore, go back in time, re-boot.

or, Operating system disc in drive, reboot, when it says boot from disc, hit return, repair the o/s with the disc, (( care needed not to re-install ))

let it finish
reboot
test

I hope this helps
Regards

Try removing the new card, booting into BIOS, change your video setting the slot of your card: I believe your card is PCI-E, save changes and exit. When it starts to reboot, turn the computer off, install the new card and then try rebooting again. You may also have to boot into Safe Mode\Uninstall the original video driver or disable that video component and then try rebooting your system.

this could be a corrupt usb controller or web cam driver; but before we get too deep when it is booting up press F8 and you will get a menu, one of which will say, start windows with 'last known good configuration', highlight line the press enter for a restart. If no luck with boot up come back.