A White Screen at Startup......What Now?

I fixed my RAM and got past the 3 beeps when starting up my iMac, but only to find a plain white screen. Is there a way to fix that or do I need to take it in for repair? I would appreciate any suggestions. Thanks.

Which iMac do you have..? > How to identify iMac models
What OS X are you running...? 10.4.11, 10.5.8, 10.6.8, 10.7.5 or 10.8.2
In any case, perhaps > Mac OS X: Gray screen appears during startup will help you out...

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Help with white screen on startup PLEASE!

My new imac is only showing a white screen on startup. I am not really confortable with mac's yet to start trying a bunch of different things, I did try a restart where you press four buttons (p and r restart I think).
I made an appt. tomorrow for the mac store. My question to you is, is this a hard drive issue. I have read a little that others have had this problem...did you loose everything on your hard drive?
Thanks guys,
Michelle

To add to the conversation, my iMac has decided not to start up any further than the grey screen with apple logo and scrolling symbol. I haven't a clue what to do with it!
I tried doing a safe boot but that didn't work. I then tried to access the disk utility repair but i upgraded the operating system on my comp to tiger so i don't know if i should be using that cd or the one that came with my computer thus old operating system.
If anyone could shed any light on this i'd be most gratefull.. i hear reports of needing a replacement hard drive.... nooooooooooooo

My Mac Pro won't start. It turns on and then a blank, white screen appears. What do I do?, My Mac Book Pro won't start. It turns on and then a blank, white screen appears. What do I do?

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This could be a software/state problem or a hardware problem. Here are steps to resolve the former.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570

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How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
If restoring to factory defaults does not solve the problem then an appointment at the Genius Bar of an Apple store is in order.

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My 2007 MacBook pro won't boot up beyond a White screen any ideas what to do?

Odd how this hasn't been archived yet.
I'm getting the same thing with my Macbook, but can't boot past the white screen. An Apple store in KS suggested I needed a new hard drive, but I've already put two in there and it's still doing the same thing. I really don't want to buy another motherboard like I had to a couple of years ago.
My choices are either buy a cheap drive to boot from and remove the current one to put into an external case, or save the money by not buying a new motherboard and putting it as a down payment toward a Mac mini.

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HT2452 White screen at startup and stays?? How can I get past this?

White screen at startup and stays?? How can I get past this?

Safe Boot is perfoming a disk integrity check and repair process which may take a long time. Let it complete, though if the startup disk requires repair to begin with, it is likely already in a failed state.
If the Mac eventually starts, take that opportunity to back up your important data if you have not already done so. It may be your last.

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Should still be under warranty. Call Apple's Customer Support - in the US, (800) 767-2775

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White Screen during Startup

Everything was working fine on the Mac until about an hour ago when I tried to install software updates and then the screen fades and a message pops up saying the computer needs to be restarted by holding down the power button.
After doing that, the computer is now stuck on a blank white screen every time it is restarted. FYI, there is no external hard drive connected to the computer. Here's what I have tried thus far to troubleshoot:
Completely disconnect from the electrical outlet and restart.
Restart with the OSX Install disc in (also tried this holding down "c", both times just goes straight to white screen and won't do anything else)
Tried resetting PRAM (it made the second chime but still wont go past the white screen)
Restart in single-user mode and safe mode (still just stuck on the white screen)
Tried restarting with any USB cables disconnected
Tried restarting with the Ethernet cord disconnected while holding down the D key per the instructions in the "Everything Mac" book (only thing connected was the keyboard + mouse)
NONE of this has worked or caused any different result, it's still just showing a blank white screen.
Can anyone suggest another possible solution or cause for this problem?
Thanks!

My iMac is brand new, barely 2 months old. I've been getting the white screen quite often at startup. The only way I can get past it is to hold down power and reboot. One thing I've noticed... I'm pretty sure it only happens when I have external drives connected. If I shut down with my hard drives mounted and restart, I tend to get a white screen. If I disconnect them, startup is perfectly fine. I'd hate to have to disconnect Time Machine every time I power down, though. What a pain. Just installed Snow Leopard; perhaps it will fix this (though it did not, sadly, fix the missing "new mail" sound, so who knows)?

White screen at startup and no bluetooth

I have owned my iMac for 2 months.now at startup there is a white screen for 3 minutes.after it boots up the bluetooth wont work at all and can not be turned on.what do i do to fix this?

Should still be under warranty. Call Apple's Customer Support - in the US, (800) 767-2775

My Mac won't boot past white screen and startup keys won't work

Hello. I have an iMac not sure what year.
So about a year ago it froze and wouldn't restart, so I neglected it for a year. Now that this my only fixable Mac I have been researching to fix it. I was able to boot into safe mode about a week ago for a little bit but then it froze again. Ever since then none of the startup keys work, even resetting the PRAM, I heard the second ding and then it just brings up the cursor on the white screen with no disk options.
I have an external disk drive connected to the USB I'd like to boot my Mountain Lion from but since the start up keys don't work I don't know how to do that.
Any help would be incredible, I do not care about saving anything from the computer I just want it to work. I hate dealing with the "geniuses" so that's not an option.
Thanks

When you hear the startup tone hold down the Option key and you should be able to boot into the Recovery Partition if you have Lion, Mt. Lion or Mavericks on the internal HD. If even the Option key does not work then your keyboard may have dead batteries or be defective and in need of replacement.
If you have ML on the EHD as a bootable clone then you should be able to boot from it.
My best guess is you have a failed HD though, my advice is to take it in for professional diagnosis to your local Apple Store or AASP and get a quote on what is wrong then decide how you want to proceed.

Macbook Pro stuck at white screen on startup. HELP!

Right when i turn on my macbook pro, it plays the startup sound and gets stuck on the white screen. I can hear it running my cd right when the computer starts up. no matter what i do, i cannot get out of the white screen. it just stays there. same thing every reboot. Whats going on???
HELP ME!

Hi, I had this exact same problem with my 15in mbp just before Christmas. I shut it down one afternoon, and then later in the day switched it back on. It wouldn't boot past the white/grey screen. It wouldn't even get as far as the apple symbol. I tried to start it up several times, but to no avail.
I called up apple support, and they had me run through various keyboard combinations at start up. Nothing worked. According to my observations and the apple telephone operator's knowledge, it was as if the keyboard wasn't booting up at all during the startup sequence, hence it was not responding to the key combinations. There was no fix available over the phone and the advice given to me was to take it to an Apple Store to have the keyboard replaced. Living in Prague Czech Rep, as I am, there is no apple store, only one reseller, which I resolved to take my mbp to the next day.
However, before the night was up, I decided to to do one more thing. According to my (less-than-Vulcan) logic, since I was taking it to be opened up, and knowing that since the dawn of time, hitting machines has seemed to give them a new lease of life, I decided to see what a sharp thump to the side of the computer might do. It wasn't overly forceful, just enough to make me feel satisfied. Would you believe it, the **** thing started up the next second I pushed the power button!
Well, I had many weeks of uninterrupted, blissful computer use until a few days ago. If you haven't heard, quite a few mbp users have been reporting cases of unresponsive keyboards and trackpads whilst running leopard, leading to kernel panics and I have now unwillingly joined their ranks. I am in no way an authority on computers (I think that's rather obvious from my repair technique mentioned above) but I have a suspicion that my little episode last Christmas is related to the current issue of the internal keyboard and trackpad becoming unresponsive, so I'd watch out for that in the future once you're able to get your laptop up and running again. There doesn't seem to be much information as to why this is happening, but for my part, I've found that it's more frequent if pressure is placed underneath the battery, and less frequent under Tiger than Leopard.
I really hope, you're able to get your mbp up and running again. I know how utterly frustrating it is when it's not working and you have no idea why.

White screen on startup wNo apple logo?

iMac running Lion was being used to browse the internet when the screen just went white. These are the things I have tried, Resetting SMC, Resetting PRAM, it won't boot in Safe Mode, off install disks or the Lion Flash Drive. The only thing that happens is that the screen is White, I don't even see the Apple logo. The only solutions I have seen in a couple other posts have been replacing the hard drive. Has anyone else seen this? If it is the hard drive why can't I boot off the install disk or even Lion on a flash drive?
I wanted to see what the community said before my last resort of taking it to the Genius Bar.

Not to leave anyone hanging on this, but the MAC had been taken to the Genius bar where, after doing everything that I did, the only 2 thoughts were video card or logic board. After a week and apparently a new logic board and video card, it is still not showing anything but the white screen and the Genius' are stumped. They are now going to try a new display. My only hope now is that it gets fixed, and if this doesn't work I don't know what will happen.
I will update this thread when there is something else to report.

Mac Mini: Error-Disk Full-UNABLE TO BOOT-WHITE SCREEN at STARTUP

Please Help!
Last night a message popped up saying "STARTUP DISK FULL/almost full...Delete files to make disk space available"
Immediately after that message the system froze and I waited for a hour to see if it would unfreeze by itself
It didn't so I then pressed and held the power button until the system shut down
Now when I power up my mac mini, all I see is a white screen
Please advise...any and all help would be very much appreciated

Which model Mac mini is it? If it is quite an old one it might not in pre-boot stage know how to drive a brand new style keyboard. You can double check the keyboard itself is ok by plugging it in to your MacBook when it is already booted.
You could also test the DVD in your MacBook.
If you have not used the DVD drive in the Mac mini for a while it might have got dirty. Eject the disc if you can and carefully blow in to the disc opening to try and clear any dust.
Normally, methods of ejecting the disk would be -
Holding down the mouse button while you start the computer
Pressing the eject key on the keyboard
and various other methods that need the computer to be already up and running
Any Apple stores in your area?
It could possibly be still trying to boot from the hard disk - if your not able to get the keyboard recognised then obviously your not yet able to get it to accept a command to boot from a different drive. If your Mac mini is an older model and hence not in pre-boot mode able to recognise the new keyboard, do you have any friends with an old plastic Mac keyboard?
An older keyboard would be one that looks like this http://www.user-agent.org/stuff/images/mac_keyboard_02.jpg
You probably have a new one that looks like http://media.macworld.co.uk/cmsdata/products/10514/07kb_top.jpg
If you feel up to it, an option would be to take the Mac mini apart and remove the hard disk, then if you have the bits, put it in an external case and you can then connect it to the MacBook as an external drive. I have all those bits available to me but many ordinary users don't.

A White Screen at Startup......What Now?

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