White screen, boots only in safe boot

Was watching a video, switched to full screen then computer froze during the transition. Had to force shutdown by holding to power button. Now on startup the apple logo displays, spinner, appears like it will boot, screen flashes dark then displays only white screen. It will boot with Safe Boot (holding Shift while powering on), tried repair disk utilities, no luck. Did the other boot attempt by powering on holding Atl/Option + Command + R + P, it makes the computer chime go off and on again but still goes to white screen.

Additionally, when booting in verbose mode I see a lot or errors for smcReadKeyAction and smcReadData before it goes to the white screen.

Similar Messages

IMac 24" boots only in Safe mode

iMac Intel 24" aluminum 3.06 processor, Graphics NVIDIA 8800 GS,from June 2008. Mac OS 10.6.7
It started a few days ago by flickering the upper part of the screen(horizontal strips) during normal use. After reboot the problem reappeared. Ata certain moment the computer would not restart, it hangs at gray screen, butthe hard drive turns and eventually other computers in a wireless networkrecognize the printer connected to the computer.
I tried all usual tricks (starting from DVD or external drive, safemode, single mode, resetting PRAM, unplugging the power cord etc.).
The computer starts only in safe mode, the gray screen becomes blue andthen normal desktop picture. Only some pictures and YouTube videos are not showing up. Safari works only with a single tab, however Firefox opens nearlyall pages.
I took the machine to an Apple shop for repairing. After 11 days theycalled me and said the video card is damaged and should be replaced (some $800). I do not have Applecare and I have to pay the costs. Before agreeing toreplace the video card I would like to know what is the origin of the problem
I wonder why the video card failed. Is it possible that another element(power supply or overheating) has caused the damage to the card? If the videocard is damaged why is it able to handle graphics when the computer is startingin safe mode?

Thank you very much.
In fact it is interesting to know if a video card can be partially dead. If it works (at least partially) at safe mode that means some components of the hardware are still alive. It seems that at starting in normal mode it tries to access something for activating the graphics and it cannot. Are there extra components activated at normal startup, which are not done at safe mode?
I unplugged the computer without holding the power button (At Apple store they didn’t tell me to hold the power button for 10 seconds after unplugging to reset SMC) - also Apple doesn’t suggest to hold the power button, see:
http://support.apple.com/kb/ht3964
I restarted the computer after resetting SMC and it started normally, but after nearly 24 hours the top of the display began to flicker followed by total freeze. After that it couldn't boot in normal mode. It hangs at startup with gray screen. Only in safe mode it can boot.

Boots only in Safe Mode - Macbook mid 2007

My Macbook mid 2007 with Snow Leopard will not boot correctly. The only successful means is Safe Mode (key S during boot).
All measures published in various postings have been conducted without any peripheral devices. These are:
verify harddisc
verify RAM
resetting PRAM and NVRAM
A detailled overview can be found under here.
The existing original RAM and harddisc were successfully tested using a second identical Macbook. A new installation of Snow Leopard on the harddisc using the second Macbook was successful and started in this second Macbook as expected. This harddisc was then inserted into my Macbook, but it would not boot. Hence it is safe to exclude problems with RAM and the harddisc.
Attempts to boot with the Snow Leopard DVD (either via C plus boot or Option during boot and select Install DVD) are not successful. Attempts to boot from an external drive are also not successful. The boot process (regular, DVD, external) progresses to different states including grey screen with Apple and frozen wheel. There is no consistency.
From the various postings I have found and studied along with my numerous tests, I have deduced the following possibilities:
There is a problem with the GPU.
There is a problem with the keyboard (maybe someone spilled something).
I have found numerous solutions for "boots only in Safe Mode". All include booting via Install DVD, but this does not work in my case.
I have exhausted all my possibilities. Hopefully someone can provide more insight.

lruetimann wrote:
What I am not able to test is booting with an external CD/DVD drive. However, there is no indication that the built-in drive is malfunctioning.
If you have a second MacBook (#2 working OK), you could use its CD/DVD drive loaded with the 10.6 DVD as the target disk to boot into, as the first Macbook (#1 the troubled one) reportedly cannot see a 10.6 DVD normally.
How to use and troubleshoot FireWire target disk mode
In your case this would be:
With the MacBook(1) on (Host), the MacBook(2) off (Target) connect the firewire cable.
Start the MacBook(2), hold T key to make it the boot drive. It will appear on the MacBook's(1) Desktop.
Insert the 10.6 Install DVD into the MacBook(2).
It too will appear on the MacBook's(1) Desktop.
From the MacBook(1), select Restart and hold down the Option key to select Start-up Manager.
From Start-up Manager, select the 10.6 Install DVD which will take you into the installation.
If this occurs, then you have booted into the install 10.6 DVD, From there you could try and install it, see what happens.
However, if it does not see the DVD disk, then this would indicate a defect in the logicboard (motherboard), though which component I would not guess.
If it does see the DVD, in Macbook (2) and can boot into it,… I'd be surprised!

N97 White Screen .. Phone wont boot at all ... Stu...

Hello all,
So I have finally stumbled upon the White Screen of Death ... Really sad that it happened but I still have hope that it may work. THe phone does not boot up and its stuck on the Nokia logo
[Long read]
It happened one before a day and I managed to find a helpful topic
/discussions/board/message?board.id=smartphones&thread.id=141381
It had everything regarding reset codes and whatnot, but the really helpful message was from grschinon .. ( he seems to know what hes doing ) .. for he shared an amazing technique of holding the green and red buttons while booting up the phone, and it worked !!
But yesterday, it happened again .. The screen wont light up and the keylock was stuck, so I just removed the battery ... I turned it on while assuming that the red/green button technique will work, but it didnt
I tried it over and over again ( been trying for half a day actually ) .. but with no avail, it didnt work ..
I tried connecting it through usb, with the wall charger, different combinations of buttons ... meh none worked
Its really annoying that half of my friends keep saying, THIS is why you get a blackberry .. and similar stuff .. My previous phones are all Nokia and this is just a huge dissapointment .. the N95 is 500000 times better than the N97 in stability and etc ... I was anxiously waiting for v2.0 ... now my n97 is dead
[/Long read]
I understand that there is a solution that will FORMAT the whole phone, but I dont want that, there are lots of pictures on my internal memorycard (32gb one) and 30+ applications (if not more) .. I seriously dont want to lose all of those ..
So do you know any other way that I can fix the problem ?? Is there a soft reset combination that i can use rather than the hard reset one??
Please advise, your comments are really appreciated,
Kind Regards,
Z
Message Edited by ZaZu90 on 10-Oct-2009 12:08 PM

These are the solutions that i've colected over the internet:
I hope it help's you!
N97 White Screen .. Phone wont boot at all ... Stuck at Nokia logo
They instructed me to turn on the phone pressing the green, red and camera button at the same time as I pressed the power button.
It worked and the phone started.
I didn't need to format my phone.
Had the same problem with my White N97 (not that the colour probably makes a difference).
Was using the Facebook App on the main screen as a widget, tried to start it up by touching it - it seemed to not start even after waiting or trying multiple times.
So i thought to myself, "I'll just reboot my phone, that should fix it."
BAD IDEA.
Got stuck on the White Screen with the Blue "NOKIA" on it, so i thought...i'll wait and see what happens.
Nothing...for hours.
So i pulled the battery and put it back in again....powered on....same thing..."NOKIA"...and nothing else.
Repeated this about....10 times, getting more and more nervous that i had turned my $950AU phone that i had boasted to my friends that is better than their iphones....into a useless brick.
So, i turned to Google looking for answers...
Someone said they left the battery out of the phone until it went flat and had some success.
I found something about other users having a similar issue with other software (Garmin GPS software), and also the "Mail for Exchange" application.
They mentioned something about the only way to get it working again was to hard reset the phone to stop the apps from going online...
I REALLY didnt want to do a hard reset, as i had a bunch of apps and data that i DID NOT want to lose or spend like 3-4hours re-installing.
SO...I got thinking...how can i stop my apps from trying to go online without a hard reset.
So this is what i tried - and it worked!
1- Power off phone (if power button responds)
2- Pull out battery.
3- Remove memory card (if you have one)
4- Remove SIM card.
5- To make sure phone has no residule power hold down power button without any of the above inserted.
6- Re-insert battery only (without SIM card or Memory Card)
7- Cross your fingers and toes. (optional...but if it helps what the hell.)
8- Power on phone.
9- IF the phone prompts you to go online in any way Select NO. (or if it says do you want to activate Offline mode say YES)
10- Press Options key when you get to the home screen and select "Content to offline mode"
11- Make sure "Offline" is displayed in top left corner near where the signal bar usually is. ( if it doesnt say "Offline" press the power button briefly, and select "Offline" (should be underneath the "Pager" profile)
12- Once you have made sure your phone and applications are in offline mode - Power off phone using Power button.
13- Remove battery
14- Again to make sure phone has no residule power hold down power button without any battery or cards inserted.
15- Re-Insert SIM card, Memory card and Battery.
16- Power on Phone.
At this point the phone should start up as per normal, I knew it was working straight away for me because my SIM card prompted me for a pin number. (which happens normally for me when I turn on my phone)
After the phone is ready, i just put my phone back into online mode by selecting my "general" profile, and put my content back online.
Please note: This is what worked for me. Results and Mileage may vary.
It seems the issue is that the phone startup is being held up or stopped due to Programs or Applications tring to go online.
For me I suspect it could have been the Facebook App due to the problems i had before powering off my phone the first time.
I am going to put my Content to offline mode if I need to reboot my phone again, at least until nokia pull up their socks and release a fix for this.
Side note: my N97 is also running Version 11 Firmware. ( not that it may make a difference)
Good luck to all with same problem, hope this works for you too.
Had the same problem but I just removed the extra memorycard and formatted it on my computer before I put it back...
after a few days trying without micro sd inserted
the result is, n97 still stuck in white screen nokia logo
it happend always if i turn off my phone without sign off the facebook app widggetz..
here is how to crash your phone
put facebook widgetz on nokia standby screeen
and then put it online mode
klik the facebook app
just do anything in your facebook for check it already connected
klik end key
now turn off your phone without sign out the Facebook
turn on again
and boom your phone will stuck on nokia white screen logo
and it will never boot forever..
sometime when you take off the batery and reinserted again it can boot normaly but the percentage is 20% only..
soo if your n97 can boot normaly after FB "accident" that mean you lucky and i sugest you unistall your FB ASAP before n97 stuck again on white screen nokia logo..
is anyone have problem like mee??
i like to hear another opinion...
i think nokia already knew this problem, that way when you check ovi and your phone set to nokia n97 the facebook app is missing...
my firmware is v11 already

Blue screen at start up Safe Boot however works...please help

After reading various posts around I can't nail it down...
My powerbook boots to a blue screen which changes 2 hues and then stops.
However, it will boot up in safe boot.
Things I have tried so far (hope I don't forget something):
1) Repair permissions.
2) Boot from Diskwarrior cd and perform repairs.
3) Reset nvram
4) Boot in open-firmware mode and reset pram and all
5) boot in single-user mode and perform that unix command ("fsck -fy" or something like that
6) ran apple hardware diagnostics from original apple cd that came with my powerbook. Here is where it gets interesting. The first time it reported an error with one of my RAM chips. I ran it again and it passed all tests. I ran it a third time and passed again...."hm..." I murmured to myself.
At this point I am suspecting it is a hardware problem but I can't trace it.
Keep in mind that the powerbook boots up fine Safe Boot mode.
Please help!

Unfortunately this problem remains unsolved.
I am able to work in safe mode however, no sound, no extensions, nada...
Too bad as I was eagerly waiting for the Airbook to be my pb replacement which isn't the case.
I a disappointed that Apple gave precedence to form over function for the Air. It will never replace
the tiny footprint of my pb, nor does it offer its options.
I don't care if a laptop is a millimeter thin. It still has the same footprint as a Macbook on a desk.
Apple tell us if this is easily fixable or should be just trash our PBs?
Other users report the same problem on various sites...

My Macbook Pro is frozen on the login page with a white screen and only my login picture. How do I fix this? I can't turn it off and I closed it and let it charge but it's still not working.

My Macbook Pro is frozen on the login page with a white screen and only my login picture. How do I fix this? I can't turn it off and I closed it and let it charge but it's still not working. It's only 3 months old and was working perfectly fine 30min before this happened.

Hello Kierasully,
I would start your troubleshooting with the article below for issues of not being able to log in to your Mac. Start with booting up in to Safe Boot as well as resetting PRAM on your Mac. If that does not work, then verify the hard drive with booting to the Recover HD and go to Disk Utility to verify it.
Mac OS X: Gray screen appears during startup
http://support.apple.com/en-us/ts2570
Regards,
-Norm G.

White Screen of Death at Startup - Boot Camp Based Problem

I recently received my Intel-based 20" iMac yesterday and this morning I set it up and transfered all of my files from my old Windows XP computer successfully. I then played around with the iLife suite and a few other programs and decided I should probably run Boot Camp and set up Windows for a few Windows-based programs I need and some games that are Windows only.
I started to look up Boot Camp on the Apple website, then realized iMacs that came with Leapord pre-installed should already have Boot Camp on them. I searched in Spotlight for "Boot camp" and found the "Boot Camp Assistant." I thought that was close enough, so I started the application up.
First, it told me I needed to partition my hard drive and create a space for Windows. I figured I would have only a few esential programs on it, so I opted for a partion of about 10-12 GB if I remember correctly. The installer then told me to insert my Windows disc and I then put in my Windows XP SP1 installation CD. It read it, shutdown, then booted back up into what I recognized as the Windows setup screen.
It went through the normal setup steps, until it got to a point where it asked what partition I should install Windows on. There was only one partition listed, so obviously I chose that one, but what was weird was the partition said it was over 100,000 MB, which is not the 10 GB I told it to partition. I got scared when it told me it would have to format the partition since it wasn't suitable for a Windows installation yet. I figured it wouldn't hurt to recheck the amount I partitioned, so I quit out of the Windows installer.
Next, my Mac restarted and went to the infamous white screen of death.
I have tried basically every single way to fix this.
I tried:
Alt - Option - PR (Reset the PRam) And waited for both 2, 3, 4, and 5 dings
Alt
Option
Shift (Safe Mode)
Put in the Mac OS X disc and booted up holding:
D
C
None of these worked. Sorry if my key abbreviations are off, by the way, because I'm writing this on a Windows laptop and I haven't gotten the keys down for Macs yet.
Does anyone have any suggestions? Apple call support is curretly closed, at least in my timezone. I'll probably try calling them tomorrow, but mostly I'm afraid of having to get a whole new harddrive and/or iMac. I haven't backed up my data anywhere yet (this is just my first day with the Mac) so if I lose the data, there goes upwards of a few thousand dollars in music and other data expenses.
Thanks in advance for ideas, I'll try anything you throw at me now, as long it doesn't void the warranty or involve formatting my hard drive. (Though if you know a way to format my hard drive AND save my data, that would be even better)

All the data that you transfered to the iMac should still be on the PC which originally contained the content. Transferring to the Mac is in reality only copying.
A Boot Camp Windows installation requires Windows SP2 only;
To use Boot Camp, you need:
1. An Intel-based Macintosh computer with a built-in or USB keyboard and a built-in trackpad or USB mouse.
2. Mac OS X 10.5 or later
3. The latest firmware updates available for your Intel-based Mac.
4. At least 10 GB of free space on your startup disk (single partition).
5. A full, single-disc version of Windows Vista, Windows XP Home Edition or Professional with Service Pack 2 or later. Boot Camp does not include Windows. You must provide your own properly licensed installation disc.
  Important: A Windows XP installation disc must include Service Pack 2 (SP2). You cannot install an earlier version of Windows and upgrade to Windows XP, nor install an earlier version of Windows XP and update it to SP2. 
6. Boot Camp Assistant (find it installed in /Applications/Utilities/ on Leopard).
Just an idea for you. There is an entire Apple Discussion forum dedicated to Boot Camp and Windows.
Whereas, not everyone here with an Intel iMac has installed, tried to install or has experience with BC & Windows, everyone there has or at least has an interest. You may attract help more quickly there.
The Forums are at the bottom of the main Apple Discussions page under Windows Compatible Technology. Here is a link;
Boot Camp: Installation and Storage

White Macbook 13" will not boot - Stuck in Safe Boot mode

In a nutshell --
macbook will not boot. Originally it was stuck on the gray screen with spinning wheel. Here is the course of action taken thus far (in order)
1. Reset SMC -- removed battery, pushed power button for 5-1 seconds. Rrestsarted. Nothing. Still with the gray screen etc.
2. Tried to restart in Safe Boot mode. -- Macbook will restart and after 25% on the status bar it hangs up. After a 5 minutes or so it shuts down (I assume form overheating as the fan is running wild.)
3. Wheneve I start it now it tires to go in safe mode so I tired to zap the PRAM (opt/command/p/r) No luck. Tried twice. Once after three chimes. Once after 2 chimes. Still tries to boot in safe mode.
4. Tried Recovery Mode (I am running Mountain Lion). Can boot into recovery mode. Ran disk repair and it said all was fine. Would not allow me to repair permissions but I could verify them. I ran verify. No messages came up at all -- thought this was strange. I also tried to re-install the OS but the first time the only disk available to me was the recovery partition. The second time I went into Recovery mode I saw the regular Hard Drive partition but it was grayed out and locked. Considered restarting to an external USB drive but then did not know what I would do then. Might try this tomorrow.
5. Ran Target disk mode with my iMac. The disk did not mount in the desktop but showed up in disk utility with the HD partition grayed out. Could verify and repair disk but nothing was allowed regarding permissions -- all options grayed out.
6. Restarted with Verbose mode. Ran for 5 - 10 minutes and shut down. Last line I saw was "checking extended attributes file" No error message. Again, maybe it was an overheating issue as the fans were going wild and it was about the same length of tome running as in safe mode when the macbook shut down.
OK. The hard drive is a few moths old. There was nothing strange going on with the hard drive prior to shut down. The only odd thing happening was the dvd drive was begining to make sounds upon restart (from sleep or full restart). Like it was checking/reading a disk in the drive. This was especially odd as the drive has been dead/unusable for a few years. (When you a dvd or cd in it could not read). This dvd drive sound happens even now upon each start up.
I do not want a new motherboard.......or laptop.
Thanks.
Robert

Thanks for the prompt response. Thanks for the adivice. I wish i could get it to go into safe mode. It stops after 5 minutes of trying. I am not sure if it is the hard drive as it will boot into Reocvery Mode -- meaning it will let me access the 650 MB parititon Lion has set aside - so that part of the disk is working.
I am headed to the Geniusues soon.

MacPro 1.1 boot only in safe mode with a non Apple display (NEC 24")

Months ago my original Apple Cinema has broken and I subtituted it with a 24" NEC Multisync LCD 2490WUXi with good results.
After some months, for cleaning purpose, I formatted the boot HD and reinstalled Snow Leopard.
Since then I can restart only in safe mode - the DVD also start only in safe mode otherwise after loading the screen is blank and shows only the mouse pointer.
I noted on System Profiler that no monitor is shown and both the DVI ports of the graphical card (NVIDIA Geforce 7300) result not connected!
I have to thing that such a monitor is not known and therefore, as I don't know where get the original one, can I use the Cinema Display 30" (but it has a minidisplay port not present on my card) and how?
Or it is better the substitution of the card having the minidisplay port? What type is compatible with Mac Pro 1.1 (2008)?
Or, in conclusion, I have to trash all and abandon Apple?
Many thanks for your appreciated suggestions.
Nerion

7300GTs are old in the tooth, there is a Boot Camp related firmware update that you should have seen in ASU.
The ATI 4870 - even flashed PC version - is one option.
I have seen other threads mention 7300.
I'd do the power off unplugged / power button for 10 second "Reset SMC" and see.
http://support.apple.com/kb/HT1436?viewlocale=en_US

Startup issue - blue screen freeze before login - Safe Boot works fine?

I've not seen this before and I can't fix, wonder if anyone has any new suggestions, here is what I've tried so far... (safe boot works fine)
1. Verbose and Single user login
2. removing the startup folder from disk library
3. Zapping PRAM
4. Reset SMC
5. Zeroed disk and reinstalled system
6. Target disk and disk repair (No Problems Found)
7. Permissions repair (No Problems Found
8. Apple Hardware Test (No Problems Found)
9. System DVD Startup - Disk Utility (No Problems Found)
10. Network Startup - Disk Utility (No Problems Found)
In every case unless I hold the shift key down for safe boot, the mac will freeze on a blue screen when the grey screen disappears, and never proceed to login. Thought about replacing the disk but it's a lot of bother on these machines and there doesn't appear to be anything wrong with it??
Any ideas?
Can anyone think of a possible fix not listed above?

Hello chip
The only thing I see missing from your list is, have you disconnected all External HD's, iPods and other storage devices befor Starting up? Sometimes when the iMac has multiple storage devices connected the Startup Manager will get lost.
Also try going to: Startup Manager in System Preferences, select the Macintosh HD and restart the iMac..
Dennis

Hangs on white screen with Apple logo while booting

I can not get my Mac Pro Quad Core to boot up. It gets to the plain white screen with the Apple logo and will not go any further. I shut down the computer and unplugged it before a bad thunderstorm. Since then I haven't gotten it to boot up just once.

The Genius Bar said it was a "blip" in the OS. I just love the technical terms Apple uses. They did a repair install of Tiger. All of my software and documents seemed to have remain safely on my computer but none of my hardware was. I had to reinstall all related software for my hardware (Apogee Ensemble and wireless keyboard and mouse).
Hope this helps you Yogafreak. I could have reinstalled the OS myself but I had already carried the heavy mac pro all through the mall so I let the pros handle it. I would have preferred some service through the phone that didn't cost $50 for 30 days.

White Screen with revolving circle after boot and login.

Reset PRAM - Same Issue
Removed internal components and cleaned dust from fan, removed/re-inserted memory after cleaning with air. Same Issue.
Booted up in recovery mode (CMD R) and reinstalled Maverick. Rebooted..Same Issue.
Booted up in recovery mode and ran disk utility. Verified MAC HD1 and HD2..all good.
This is when I discovered that I had only 16MB of free space on my 2TB primary drive. I have TB free on second drive.
Question: Is there anyway to boot up and move files to secondary drive? Maybe if I free up space it will boot?
Thanks!!
Chris

Try a Safe Boot from the HD, (holding Shift key down at bootup), it may give you a bit more free space to boot with, if that is the problem, otherwise I think you may have to Intall MavX on the second drive & boot from that using alt key.

Screen Color change after Safe Boot

I did a safe boot in order to install software for new graphics card. The ATI ROM install called for the safe boot. When in safe mode, the screen color turned a blue-green. After restarting, the same blue-green screen (though not quite as dark) remains. I've powered off completely, unplugged, and restarted. Still, there is something wrong.
Additionally, I noticed that my Netscape Communicator would not open up and I couldn't find the application.
Can anyone help?

this is a user to user forum, you will not get official answer from nokia on these boards, you can officialy launch a compliant, or question by using the 'contact us button' on the top right of the page next to repair&recycle tab.
You know what I love about you the most, the fact that you are not me ! In love with technology and all that it can offer. Join me in discovery....

Blue screen after appemtping a safe boot. HELP!

I attempted a safe boot after receiving a gray screen w/ spining gear. I have since gotten a blue screen. PLEASE HELP!

Hello,
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at the top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

White Screen 20" iMac a1224, chimes, boots, screen dims after a while. When mirrored on external display seems fine. Any thoughts?

Title says it all. 20" iMac a1224 when I start it up it chimes and seems to boot wireless keyboard connected to it and makes noises, wired mouse. Connected display to it and randomly clicked and dragged until I pulled preferences over to external display and set to mirrored. everything "seems" to functioning fine besides built in screen. Not sure what other tests to do, any input would be great.

OK here is an update.
iMac 20" 2 GHz Intel Core 2 duo, 2GB 667 MHz ddr2 sdram serial number - W873688AX85
I replaced the harddrive - WD caviar blue 500gb SATA III 7200rpm 16mb cache WD5000AAKX
Installed Mountain Lion 10.8.5 with the iMac display disconnected, (the plug directly to the right of the wireless card), and connected to external display. One partition.
Did all of the current updates
Powered off, disconnected power cord, connected internal display, rebooted - still white screen with extended desktop on external display
Read something about the four green LEDs. With the internal display connected, the fourth LED from the left with the LEDs being on the left of the RAM slot, is on. This LED does not come on when the internal display is disconnected.
From here I just dont know if its the display or the loic board. Are there any tests I can do to narrow it down?
I saw that the G5 had problems with capacitors, can this be similar?
Thanks

White screen, boots only in safe boot

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