What causes a blank screen instead of the log in screen

What would cause a blank screen when turning on desktop?

On the about:newtab page in the upper right hand corner, is there an option to change the blank page to Classic or another option?
Does this happen in Safe Mode? [[Troubleshoot Firefox issues using Safe Mode]]

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HT5219 my thunderbolt shows the sleep screen instead of the MacBook Air screen How can I get my screen to show up on the Thunderbolt?

I cannot see my MacBook Air screen on the Thunderbolt display. All it shows is a screen saver. How can I get simultaneous screens to show on the Thunderbolt?

I think changing the symbols from movieclips to graphics helped, thank you.

My mac air won't start up.it is frozen right before the log on screen. It shut down fine the time before, what should I do? Does it have a safe mode like windows?

My Mac book air wont start up.it is freezing up right before the log on screen. It shut down properly. I cant figure out what could of caused this. Any advice would be greatly appreciated.

Hi Justin,
Are you getting to the Login screen? Or is freezing up on a blue screen? Are you still at the gray screen? Run any updates recently?
You can try Safe Boot/Mode and see if that does anything - http://support.apple.com/kb/ht1455
The next step would be to try and verify/repair Disk Permissions, but you'll need access to another computer for DVD/CD sharing or an external DVD drive.

How can I get a pdf. to open in Safari, all i'm getting is a new window with a black, blank page, instead of the pdf., and I don't want to save the file to the desktop, Safari didn't use to do that, and I don't have Adobe in the internet plug in folder.

How can I get a pdf. to open in Safari, all i'm getting is a new window with a black, blank page, instead of the pdf., and I don't want to save the file to the desktop, Safari didn't use to do that, and I don't have Adobe in the internet plug in folder.

Hi
Please take a look to this thread Re: Can I refresh the browser rather than open a new tab?

Preview - displays a blank window instead of the jpg???

Installed SL yesterday, and now Preview displays a blank window instead of the jpg??? The jpg opens in iPhoto.
Anyone one else? Any suggestions?
Thanks.
Ron...

Hi Ron,
Try deleting this file.
com.apple.Preview.plist
/Users/YourName/Library/Preferences.
Drag that file from the Preferences folder to the Trash, emtpy the Trash and restart your Mac.
If that doesn't help, right or control click that image, then click Get Info.
In the Get Info window click Open with. You may have to click the discovery triangle.
Click the pop menu and select the application you want to open that image with... you may have to navigate to your Applications folder to make a selection.
Carolyn

How do i set my homepage to show when i click a new tab instead of the about: Tabs screen?

Is there a way to set the homepage to open when one clicks the plus on the tab bar instead of the about: Tabs screen opening?

New Tab Homepage extension: <br />
https://addons.mozilla.org/en-US/firefox/addon/777

TS3623 purchasing a movie from apple tv has stopped working. I click on "movies" and it takes me back to the same screen instead of the movies available. I have updated software, unplugged the modem & apple tv box, & the tv; Netflix still works!

purchasing a movie from apple tv has stopped working. I click on "movies" and it takes me back to the same screen instead of the movies available. I have updated software, unplugged the modem & apple tv box, & the tv; Netflix still works!

Welcome to the Apple Community.
First you should try logging out of your iTunes Store account (settings > iTunes Store > accounts) and then back in again.
If that doesn't help, try resetting the Apple TV (Settings > General > Reset > Reset all settings). You should also try restarting your router.
If both of the above don't help, you should try a restore (Settings > General > Reset > Restore).

When I have finished working on an image in Photoshop and I hit the save button it goes instead to the "save as" screen. This never happened in previous Photoshop versions. When I get to Lightroom, I have a grey screen the says "File could not be found."

When I have finished working on an image in Photoshop and I hit the "save" button, it goes instead to the "save as" screen. This never happened in previous Photoshop versions. When I get to Lightroom, I have a grey screen the says "File could not be found." I then have to go to "locate" to get the image. When I select the correct image, I get a message that it is not the same file name but I am eventually able to access the image. Needless to say this is having a negative impact on workflow!

The problem with write permissions for the OneDrive folder only shows up in Lightroom 6's export dialogue, that's why it's to irritating. Lightroom 5.7.1 is not having that problem nor does the file explorer. The problem also exists on both of my machines. I will try to check for other problems with the OneDrive troubleshooter though: Running the OneDrive troubleshooter - Windows Help

I have adobe acrobat 11 reader writer I want to use the pointer symbol on full screen instead of the hand, iwas able to do it on adobe 10 also when in full screen i can't open attachments unless i right click and open it then it boots me out of full scree

I have adobe acrobat 11 reader writer I want to use the pointer symbol on full screen instead of the hand, iwas able to do it on adobe 10 also when in full screen i can't open attachments unless i right click and open it then it boots me out of full screen is there any way i can click on the attacment without going out of full screen

I don't know why the change, but the pointer appears in the same way as it does on the main screen, not a pointer. There does not appear to be anyway to change it. You may want to submit a comment to the Features Requests: Acrobat Feature Requests. I also submitted this as a bug.
As a clarification, your "adobe acrobat 11 reader writer" is not informative. There is Acrobat 11 and Reader 11. Writer is not a product as such. So you have referred to Acrobat in a contradictory manner. In the future, please just indicate Acrobat 11 or Adobe Acrobat 11.

What causes my ipad to lock in the horizontal view?

What causes my ipad to lock in the horizontal view?

1. Settings>General>Set Side Swith To: Rotation Lock
2. Use Side Switch to unlock rotation

Quicktime Plugin (Mac) yields a blank page instead of the embedded player.

When clicking on a link to an MP3 file, my app settings used to invoke the QuickTime Plug-in in Firefox 5 (Mac). Now, when I click on a link to an MP3 file, I see a blank page instead of the QuickTime Plug-in Player. The plugin seems to work in Safari (no surprise there, it is Apple QuickTime in Apple's Safari after all).
This is driving me nuts. It was working fine in Firefox 4.

Right click on the document and select Open with-Adobe Acrobat. Or right click on the document and select get info, go to the open with drop down menu and select Acrobat. If you want all documents of that type to open with Acrobat check the box.

Macbook Pro unable to get pass the Log in Screen.

Hey hope someone can help.
Okay so last night I was using Windows, I shut down, then a few hours later I switched it on to go onto my Mac, but it took forever, I left it though and eventually I got to the log in screen, I entered my password and it was loading then the screen went blue/gray (not sure I think both) and went back into the log in screen again... I did this numerous times before giving up and shutting down. Went to sleep, woke up and resumed this...so I decided to see if I could log into my windows, which it did just fine, I'm on windows typing this right now.
I have run the apple hardware test, extended too, and I have recieved the error code: 4SNS/1/40000000:Th2H-63.000 (No idea what that is)
I have also tried booting from my start up disk that came with my Mac. It gives me the Apple logo on the gray screen then ejects my disc, gives me this long story... kind of goes: panic (cpu 0 caller 0x00431da3):"unable to blah blah... Tells me to restart or shutdown.
I looked at my disc and I think its cracked, So I have to get that replaced.
I think I have to archive and install, I really don't want to lose my music, as I haven't backed it up. 400 songs or so nothing much, I'm not worried about the other stuff as that is all backed up.
Long story short can someone tell me what's going on with my Mac? why am I still able to use windows fine? Has windows done a hit on Mac OS? lol. Is the solution to replace my install disc at Apple? I really don't know, any help would be greatly appreciated thanks, I'm just too tired and can't Google anymore :P
(I have a small partion of 32GB dedicated to Windows Vista.)

"I have run the apple hardware test, extended too, and I have recieved the error code: 4SNS/1/40000000:Th2H-63.000 (No idea what that is)"
Neither do I. Suggest that you take your MBP to an Apple Store or an AASP.
"Is the solution to replace my install disc at Apple?"
Yes. You can get replacement System Install & Restore CD/DVDs from Apple's Customer Support for a nominal S&H fee. *You'll need to have the model and/or serial number of your Mac available.*
Since you're not in the US, you may need to go through the regional Apple Store that serves your location to find the contact number. Here's a list of links to all of those -
http://store.apple.com/Catalog/US/Images/intlstoreroutingpage.html
!http://i50.tinypic.com/izvwo1.gif!

I just installed Mountain Lion. I'm having an issue on the log in screen.

Hello,
I just installed Mountain Lion 10.8.2 on my iMac. We have four user accouts on the computer and when you first wake the computer where you would normally choose an account and log in the screen is white. When you move the mouse around it leave a little trail of the log in screen until you find your acct and click on it and then it allows you to log in. Its never done that before, at least until I upgraded. This computer was bought right before Lion came out and I didn't upgrade it right away because I wanted to wait and see how everyone else liked it. I finally upgraded last week and aside from this issue it works great and I love the features but it is really annoying. What should I do? Has anyone else had the problem? I upgraded my Macbook and it hasn't had any problems but I only have one acct on it since my wife and kids don't use it. Thanks for the help in advance.

Contact Apple Service, iMac Service or Apple's Express Lane. Do note that if you have AppleCare's protection plan and you're within 50 miles (80 KM) of an Apple repair station, you're eligible for onsite repair since yours is a desktop machine.

After a power outage my imac will not let me log in to the adminstrator, it just comes back to the log in screen

Can somebody help?
We had 3 power outages in quick succession and now my imac will not let me log in, it just comes back to the log in screen.

Hello,
What OSX version?
If 10.7.0 or later...
Bootup holding CMD+r, or the Option/alt key to boot from the Restore partition & use Disk Utility from there to Repair the Disk, then Repair Permissions.

Hello, I have been having bsod's that occur on start up at the log in screen.

Hello. Like the title says, I have been getting bsod's at start up right around the time the computer gets to the log in screen. It does not do it every time but it has happened a few times now and I was wondering if anyone could help me figure this out.
I have seen on other parts of this site that people are sometimes willing to examine the dmp files that are associated with the bsod. If anyone would like to help me out with that I would be very thankful.

Greg
These 2 were Related to swiwdmbx64.sys wireless USB Modem from Sierra Wireless Inc. I would install the newest driver available.
Microsoft (R) Windows Debugger Version 6.3.9600.17029 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [C:\Users\Ken\Desktop\Minidump\042514-10810-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
************* Symbol Path validation summary **************
Response Time (ms) Location
Deferred SRV*H:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: SRV*H:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Kernel Version 7601 (Service Pack 1) MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 7601.18247.amd64fre.win7sp1_gdr.130828-1532
Machine Name:
Kernel base = 0xfffff800`0344d000 PsLoadedModuleList = 0xfffff800`036906d0
Debug session time: Fri Apr 25 21:17:31.918 2014 (UTC - 4:00)
System Uptime: 0 days 0:00:13.762
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
* Bugcheck Analysis *
Use !analyze -v to get detailed debugging information.
BugCheck A, {88, 2, 1, fffff800034a3666}
*** WARNING: Unable to verify timestamp for swiwdmbx64.sys
*** ERROR: Module load completed but symbols could not be loaded for swiwdmbx64.sys
Probably caused by : swiwdmbx64.sys ( swiwdmbx64+8e54 )
Followup: MachineOwner
0: kd> !analyze -v
* Bugcheck Analysis *
IRQL_NOT_LESS_OR_EQUAL (a)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high. This is usually
caused by drivers using improper addresses.
If a kernel debugger is available get the stack backtrace.
Arguments:
Arg1: 0000000000000088, memory referenced
Arg2: 0000000000000002, IRQL
Arg3: 0000000000000001, bitfield :
bit 0 : value 0 = read operation, 1 = write operation
bit 3 : value 0 = not an execute operation, 1 = execute operation (only on chips which support this level of status)
Arg4: fffff800034a3666, address which referenced memory
Debugging Details:
WRITE_ADDRESS: GetPointerFromAddress: unable to read from fffff800036fa100
GetUlongFromAddress: unable to read from fffff800036fa1c0
0000000000000088 Nonpaged pool
CURRENT_IRQL: 2
FAULTING_IP:
nt!KeInsertQueueApc+42
fffff800`034a3666 f0480fbaab8800000000 lock bts qword ptr [rbx+88h],0
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
BUGCHECK_STR: 0xA
PROCESS_NAME: System
ANALYSIS_VERSION: 6.3.9600.17029 (debuggers(dbg).140219-1702) amd64fre
DPC_STACK_BASE: FFFFF80000BA2FB0
TRAP_FRAME: fffff80000b9c3a0 -- (.trap 0xfffff80000b9c3a0)
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=0000000000000002 rbx=0000000000000000 rcx=fffffa800a8308a8
rdx=0000000000000000 rsi=0000000000000000 rdi=0000000000000000
rip=fffff800034a3666 rsp=fffff80000b9c530 rbp=0000000000000002
r8=0000000000000000 r9=0000000000000000 r10=fffff88006b9ed80
r11=fffff80000b9c678 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0 nv up ei ng nz na po nc
nt!KeInsertQueueApc+0x42:
fffff800`034a3666 f0480fbaab8800000000 lock bts qword ptr [rbx+88h],0 ds:00000000`00000088=????????????????
Resetting default scope
LAST_CONTROL_TRANSFER: from fffff800034c2169 to fffff800034c2bc0
STACK_TEXT:
fffff800`00b9c258 fffff800`034c2169 : 00000000`0000000a 00000000`00000088 00000000`00000002 00000000`00000001 : nt!KeBugCheckEx
fffff800`00b9c260 fffff800`034c0de0 : fffffa80`09d7ec60 fffff880`066d2410 fffffa80`0b00c1a0 00000000`00000000 : nt!KiBugCheckDispatch+0x69
fffff800`00b9c3a0 fffff800`034a3666 : fffffa80`0a834930 fffff880`066b1f8c fffffa80`0b00c428 fffffa80`00000000 : nt!KiPageFault+0x260
fffff800`00b9c530 fffff800`034c6df3 : 00000000`00000000 00000000`a000000c 00000000`00000000 00000000`00000000 : nt!KeInsertQueueApc+0x42
fffff800`00b9c590 fffff880`06c47e54 : fffffa80`0a821b30 fffffa80`0bac4100 fffffa80`0babdb10 00000000`00000000 : nt!IopfCompleteRequest+0xb63
fffff800`00b9c680 fffffa80`0a821b30 : fffffa80`0bac4100 fffffa80`0babdb10 00000000`00000000 00000000`ffffffff : swiwdmbx64+0x8e54
fffff800`00b9c688 fffffa80`0bac4100 : fffffa80`0babdb10 00000000`00000000 00000000`ffffffff fffffa80`0ba7c0d0 : 0xfffffa80`0a821b30
fffff800`00b9c690 fffffa80`0babdb10 : 00000000`00000000 00000000`ffffffff fffffa80`0ba7c0d0 fffffa80`0baed010 : 0xfffffa80`0bac4100
fffff800`00b9c698 00000000`00000000 : 00000000`ffffffff fffffa80`0ba7c0d0 fffffa80`0baed010 fffffa80`08130d90 : 0xfffffa80`0babdb10
STACK_COMMAND: kb
FOLLOWUP_IP:
swiwdmbx64+8e54
fffff880`06c47e54 ?? ???
SYMBOL_STACK_INDEX: 5
SYMBOL_NAME: swiwdmbx64+8e54
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: swiwdmbx64
IMAGE_NAME: swiwdmbx64.sys
DEBUG_FLR_IMAGE_TIMESTAMP: 4fc3bc42
FAILURE_BUCKET_ID: X64_0xA_swiwdmbx64+8e54
BUCKET_ID: X64_0xA_swiwdmbx64+8e54
ANALYSIS_SOURCE: KM
FAILURE_ID_HASH_STRING: km:x64_0xa_swiwdmbx64+8e54
FAILURE_ID_HASH: {8e6f3955-6597-17ce-f929-ef9b2b41cb5f}
Followup: MachineOwner
Wanikiya and Dyami--Team Zigzag

What causes a blank screen instead of the log in screen

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