mryell

Level 1 (8 points)

Desktops

Q: white screen on iMac

I have a white screen on my iMac when trying to startup,

i have managed to reboot in safe mode but cannot ind the problem.

when i shut it down and restart as normal it will go back to the white screen

Posted on Sep 19, 2016 3:07 AM

I have this question too

Q: white screen on iMac

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by kaz-k,

kaz-k Sep 19, 2016 5:28 AM in response to mryell
Level 5 (5,784 points)

Desktops

Sep 19, 2016 5:28 AM in response to mryell

Resetting SMC could solve the problem.
Reset the System Management Controller (SMC) on your Mac - Apple Support
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by den.thed,

den.thed Sep 19, 2016 6:32 AM in response to mryell
Level 7 (27,560 points)

Sep 19, 2016 6:32 AM in response to mryell

Can you login and run in Safe Mode...?

If so, then there could be a number of things that are preventing normal startup.
1. Startup Items and Login Items
2. Bad external devices or cables

If not, then try OS X Recovery > Utilities > Disk Utility > First Aid > Run
or using your OS X Install Disc 1 for 10.6 and earlier
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by mryell,

mryell Sep 19, 2016 9:11 AM in response to den.thed
Level 1 (8 points)

Desktops

Sep 19, 2016 9:11 AM in response to den.thed

hi
i can login and run in safe mode
i have removed external cables and tried the disk utility- first aid.
then when i restart it goes back to the white screen
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by den.thed,

den.thed Sep 19, 2016 12:58 PM in response to mryell
Level 7 (27,560 points)

Sep 19, 2016 12:58 PM in response to mryell

It sounds like you have installed or setup some funky third party Startup Item or Items, that need to be removed while your booted into Safe Mode.

see > thexlab.com/faqs/startupitems.html
the article is a little dated, but does a great job of explaining how to track down and remove Startup Items.

another one is > Tip_Removing_Startup_Items_Using_Safe_Mode
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