MacBook Pro :: Why Does Display Light But Computer Does Not Boot

Aug 24, 2014

When I power the computer up, screen lights, but the computer does not boot up?

Info:
MacBook Pro, Can't check operating system

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MacBook Pro :: After Display Sleep Or Computer Sleep On / Login Not On Boot Up

Dec 11, 2014

I have a macbook pro 13" early 2011 and I'm se as shown in the pictures (since i upgraded to os x yosemite) . It happens after display sleep or computer sleep on login not on boot up .I've noticed that i run out of ram when the problem appears (only 15MB RAM available out of 4GB), though i doesn't happen every time . I've talked to service and told me its either motherboard replacement or because the ram isn't enough (gpu shares with main ram) so maybe i should try upgrading ram. URL....

Info:
MacBook Pro, Mac OS X (10.6.8)

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MacBook :: It Won't Boot-up Power Light On

Apr 11, 2012

My MacBook won't boot up without the system disk, has Lion with 4 Gb Ram all updates, has a DVD stuck n the drive?

Info:
MacBook, iOS 5.0.1, 4 GB RAM

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MacBook Pro :: Back Light Only After Using Thunderbolt Display?

May 13, 2012

I have a new 2012 Macbook pro 17 and a 27 inch thunderbolt display. 

The Macbook was working great. Then I connected it to the thunderbolt display and did clamshell mode. That worked well too. But.. then I powered down the macbook, disconnected the thunderbolt dislplay and tried to boot back up again. The mac book powers on, the back light comes on, I hear the chime then that is it. The back light stays on nothing else happens. Resetting the PRAM can not be done. Any of the boot options are ignored. It is like the keyboard is non resposive. I tried all the reset and boot  combinations available but nothing works.  

The light on the front of the macbook comes on then goes dim. The apple logo on the lid stays lit, and if I close the lid, the apple logo goes dim and the light on the front lights up. Weird, it is almost like it goes to sleep when it turns on. I tried conntecting the thunderbolt again but no joy. I am really disappointed. This is less than a month old and its already going in for repair. It should be replaced.  

Info:
MacBook Pro, Mac OS X (10.7.4), I am disapoint.

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MacBook Pro :: Sleep Indicator Light Should Be Solid When The Computer Is On?

Jul 3, 2009

PROPOSITION: Turn the sleep indicator light to a power indicator light.

I just noticed, the sleep indicator light pulses when my MBP is in sleep, but is always completely off when it's in use. This is actually a little frustrating, as sometimes I leave my MBP idle with the screen off and the backlit keyboard off as well, and I can't tell if the thing is on or not since it's dead silent.

Also, I noticed that when I leave my MBP plugged in, idle overnight, the sleep indicator light is solid in the morning. It's definitely not indicating sleep, since the unit is on, so I'm not sure what it means.

Anyway, anyone else think the sleep indicator light should be solid when the computer is in use? How would you tell the difference between an MBP that is powered off, and closed and slipped into a backpack, from an MBP that is simply powered on but fails to enter sleep for some reason?

Is there a way to keep the light on forever, sort of like a power indicator? ALL my previous laptops have some sort of power LED just so you can at least tell it's on. It just doesn't make sense to me.

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MacBook Air :: Light On Computer Charger Is Not Turning On And Not Charging

Dec 2, 2014

The light doesn't on my computer charger is not turning on and not charging.

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MacBook Pro :: Display Brightness Ambient Light Sensor?

Aug 31, 2009

I thought Apple said that the brightness will go brighter when it's darker, and get dimmer when it's brighter. Why is mine doing the opposite?

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MacBook Air :: Unable To Boot System / Magsafe Charge Light Is Green

Aug 31, 2008

Sooooo I just got my brand shiny new CTO 4GB 13.3 MBA this morning at about 9:45 am yesterday in Illinois. I was sposed to go to bed because I am working nights at the moment but i stayed up for hours setting it up and playing with it (my first MAC) and so I finally get home after working a 12 hour night shift and open up my new MBA expecting instant on and....nothing. The damn thing will not turn on and I tried all the tricks of the trade (suggested by apple support page) and nothing. It was fully charged when I left it in the morning. Also, my magsafe charge light is green which means it is still fully charged right??? Man what a super disappointment. My first MAC and it freaking dies immediately. My Win 7 desktop at least started...good ole faithful (granted it took about 55 seconds...pff)

I'm so sad!

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MacBook Pro :: Use Computer In Closed Clam-shell (display Closed) Mode With An External Display?

Jun 4, 2012

I have an 13" MBP that I ordered new in April, 2012. It is running Lion. I have an external monitor that is capable of 1440x900 resolution. I have an external keyboard and trackpad hooked up, and I like to close my MBP up and stick it in a BookArc. I want to be able to have the internal display disabled and to have the MBP only allow me to put windows on the external display, so long as the lid is closed. I also want to be sure that I am taking advantage of the resolutions available on my external monitor, which are higher than those supported by the internal display (specifically 1440x900). 

This doesn't seem to work because I either have to allow the MBP to continue to draw my desktop across both screens (internal and external), OR use the "mirror displays" mode, which restricts my resolution of my external monitor. This means I either forgoe the additional resolution benefits of my external monitor, or I end up with windows that fall off-the-cliff, so to speak, because they are drawn in the portion of the desktop that would be shown on my internal display (which is closed). 

I've read the community support pages on using the MBP with an external monitor, most relevantly, this page. It simply recommends using the "mirror displays" option. However, this option, as I mentioned above, doesn't allow me to make use of the additional resolution, and my external display looks bad. how to keep the 13" MBP in closed clamshell position, with the internal display disabled, and use my external monitor at resolutions higher than those allowed by the 13" MBP but which are available to my external monitor when not in "mirror displays" mode?

Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3), External display (1440x900)

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MacBook Pro :: Use Computer In Closed Clamshell (display Closed) Mode With An External Display?

Jun 24, 2012

I am wondering that is it essential to connect power adaptor all the time while operating in closed calmshell mode? When I unpluged the cable it didn't work. Is there some way?

Info:
MacBook Pro, iOS 5.1.1

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Mac Pro :: Freezes On Log On Now Display Flashing Like Strobe Light

Apr 16, 2008

This morning my girlfriend booted up the MP and it froze when she tried to log on. A short time after freezing she was able to bring up the Dashboard but then the computer display went wild flashing like a strobe light. Ever heard of this?

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Software :: Won't Work To Wake Computer / Power Light Is On

Jul 24, 2009

I've just recently purchased my Mac Pro and have tried multiple times to leave it on, with the monitor set to sleep (using hot corner) and the computer set not to sleep. The purpose is to be able to access my music library while on the go. For some reason, when I come back to the computer it won't wake, the power light is on so I'm assuming it froze or had a kernal panic.

I'm running Simplify Media and a Hawking USB wifi adapter to access my music on the go, no other 3rd party peripherals.

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Hardware :: Flickering Light On Right Bottom Of Cinema Display

Nov 26, 2007

Got a bit of a wierd one. Apple 22" cinema display (the old style). Running from a mac pro with a ATI radeon 1900XT graphics card. Have 4 operating systems running, all were working perfectly until last night. Leopard works great - no problems, as does Tiger and Windows XP running boot camp. What does not work is Vista x64. It was not installed with compatible bootcamp because x64 operating systems are not supported yet. It has been running fine for months though? I also run a small dell 17" TFT off the same graphics card and no problems with that. It defaults to the main desktop on starting up vista, but only in vista. And I get this fast flashing light - about 2 every second or so - regularly. No amber lights and no groups of three.

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Hardware :: Mac G4 Not Boot Up - Red Light On Mother Board

Aug 4, 2009

My g4 was working fine then I turned it on and nothing no chime no nothing but power. I opened it up an a red light on the mother board was on does anyone know what the problem is.

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Hardware :: Cinema Display Standby Light Stopped Glowing?

Jan 14, 2009

Just a quick question, been searching for an answer the last few days, but been unlucky...I'm just curious, why has my Cinema Display standby light stopped glowing (from dim to bright then back again)? I'm sure it use to do this when i first got it - the display itself is only 6months old

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Hardware :: 23" Apple Cinema Display - Power Light

Aug 23, 2010

I have a 23" cinema display and the power light and the standby light will not come on what could this be?

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Hardware :: Apple 23" Display Shows No Picture - Light Blinking?

Apr 17, 2009

My Apple 23" display shows no picture and the power light is blinking short-long-short.

Is there anything I can do to fix this????

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IMac :: Light Vertical Wavy Floating Lines With Boot Camp?

Nov 5, 2008

I have a 20'' iMac with a 2.4GHz Core 2 and an HD2600XT.

There are light vertical wavy floating lines visible on the screen when running Windows XP. They are more clearly seen when you look the screen at an angle, from down below you look upwards to the screen. The floating lines can be precisely seen on grey backgrounds. These lines are not noticable much, but when you closely look with grey backgrounds, they are visible.

The problem is very strange because I've tried updating the drivers to my HD2600XT, and no luck at all.

I'm not able to determine wether the problem is hardware of software related, due to the problem not existing in Mac OS X.

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Hardware :: IMac 17" G5 Won't Boot Up - I/O Button Flashes With White Light

Mar 31, 2008

The iMac G5 (17") doesn't want to boot up, when I press the I/O button it flashes with its white light, and then nothing happens. When I do that with the back-cover off light 1 is lit as long as the machine has power, but light 2 only flashes when I connect the pins that the powerbutton connects. I know that there was a problem with the powersupply, but the soldering I did should have fixed that.

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Power Mac :: G5 Stuck At Light Blue Screen - Will Not Even Boot In Safe Mode

Mar 22, 2012

I have a 2.0 GHz early 2005 Power Mac G5 (7,3) that won't get past the light blue screen at start-up. I've tried everything - reset the PRAM, Apple Hardware Check (on overnight loops, everything came back OK), fsck (all OK), repaired my HD and permissions on it, and then erased the drive using Target Disk Mode and another Mac, and attempted to reinstall OSX from the install disk that came with it (with OSX Tiger). I've tried switching out the RAM with no luck.

The only thing I haven't tried is a new video card (the installed one is an ATI Radeon 9600). Here's what it does: powers on with the usual chime, then moves on to the white Apple screen, the wheel spins, then it moves on to a darker blue screen, then it finally moves on to a lighter blue screen with an arrow, and it just stays there. It will boot into safe mode (pressing shift), but I can't even upgrade to Leopard in safe mode, much less figure out what's wrong.

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MacBook :: Computer Will Not Boot?

May 25, 2012

I have a mid-2010 MBP. Earlier when I was not actively using it, it started beeping very loudly in evenly spaced intervals every few seconds.  It seemed unresponsive, so I turned it off by holding the power button. Now it will not boot up. The little white indicator light comes on and I can hear the fans turn on, but that is it. It will not even go to the boot screen. 

I had the logic board replaced about a week ago, but otherwise nothing new has been installed software or hardware.

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MacBook Pro :: Display Sleeps But Computer Always Stays On

Oct 1, 2007

I've set my energy saver preferences to put the display to sleep after 10 mins and the computer to sleep after 15 minutes of inactivity. The display sleeps but the computer always stays on, whether on battery or A/C. What's the problem here?

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MacBook :: Using Computer With External Display And Lid Closed?

May 8, 2009

So I've recently connected my MacBook to an external display (a TV actually). Obviously, when I close the MacBook's screen the computer goes to sleep. How do I stop this from happening? I checked in 'help', it said that if I connected the monitor to the computer after closing the display, the computer would continue to run with the display closed. I've already connected it all though (running cables through cabinets, etc.) and I don't really want to undo all of that! Is there an easier way to set the computer to stay on (as opposed to entering sleep mode) when the display is closed?

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MacBook Pro :: Computer Turns On - Unable To Get Display

Aug 4, 2010

I have a 2 year old aluminum (not uni-body) 15" Macbook Pro. Today when I turned on my computer, the front light went on, I heard the hard drive spin but the screeen remains completely black.

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MacBook Pro :: The Computer Does Not Recognize The Display Connected To The Usb

Mar 5, 2012

I have a macbook pro purchased last June.  Want to connect an external display and the only option is usb.  Apple does not make a minidisplay to usb adaptor and I can not find one on line.  Computer will not recognize the display connected directly to the usb.  What can I do?

Info:
MacBook Pro

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MacBook Pro :: Display Does Not Turn On Even Though Computer Is Running

Aug 31, 2014

I have a 2008 non-unibody MacBook Pro. When I boot the computer, sometimes the display does not turn on. I've tried using the flashlight technique, and there isn't even anything on the LCD. I know the computer is on because it makes the chime and if I enter my password I can adjust the volume and play music. Occasionally, resetting the SMC will fix the issue temporarily, but it doesn't always work. What should I do?

Info:
MacBook Pro, OS X Mavericks (10.9.4)

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MacBook Pro :: If Usb Is Plugged To Computer It Won't Boot

Feb 7, 2012

I have two usb hdds connected to a usb hub. I've never had any issue with it(the hub). After I installed the last update 10.7.3 everytime I restart my computer if I have the hub (with all my hdds and other devices) connected to my computer, the computer won't boot. It get up to the white screen (before the loading wheel). If I unplug the usb cable it starts booting inmediately.

Info:
MacBook Pro

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MacBook Pro :: How To Boot Of External Computer

May 7, 2012

I was copying over a SD card via the SD Card read to my internal hard drive. Half way through it froze. And it wouldn't let me do anything. I removed the memory card and all I or was a spinning rainbow circle.  So I powered off the MacBook manually (holding power button).  When it started up again it came to the apple logo. And froze. So like a idiot I manually powered off the MacBook again.  Next time it booted it showed me the stop sign.I tried to boot from cd (holding C while laptop starts), the disk spins but ends up hanging on a White screen.  Now I don't mind reinstalling OS x over it. But I just need one folder from It. Is there anyway I can connect this MacBook to my mac pro browse the MacBook internal hard drive and copy over the folder I need? 

Info:
MacBook Pro, Mac OS X (10.6.8)

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MacBook Pro :: Computer Wont Boot Up?

Jul 3, 2012

My computer doesn't boot up past a white screen with the grey apple on it.

Info:
MacBook Pro (13-inch Late 2011)

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MacBook Pro :: Light Humming And Light Vibrating?

Nov 16, 2010

When I am in a quiet room, I notice a light humming coming from my macbook pro and also a light vibration on the right side. Is this just the hd spinning or something to be concerned about? it is 2 weeks old.

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