AHT does NOT start while holding "D" key

Anyone knows why on my MacBook Pro 15" i7 quad-core 2.0GHz (Early 2011) when I try to boot from Apple Hardware test it DOESN'T?
I'm holding down the "D" key when booting my Mac.
Thanks

Read this about the guest user account: http://reviews.cnet.com/8301-13727_7-20119806-263/os-x-10.7.2-with-icloud-showin g-guest-user-account-at-log-in/ and no I have not idea about the AHT except to point you in this direction:http://support.apple.com/kb/ht1509

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SOS! The database does not start and the license key can not be installed.

Hi,
I have installed the SAP Netweaver 200s testdrive on linux x86-64. I have got the hardware key and requested a license key. I have received an E-mail with the license key (N4S.txt) attached.
Unfortunately, I am not able to active the installation with this license.
I always get the error: "open of N4S.txt failed: No such file or directory"
I have renamed the license as N4S.rpm but it still not working.
Furthermore, I could not start the database in the previous step. I have got the error: Database failed to start.
Does anyone already have the same errors? Your help will be so greatful.
Thank you.
Jodie

Hello,
yesterday, I have tried your propositions but nothing doesn´t change.
@Joe
"You might want to check installation log files.."
I do it but I did not see any error.
@Marcel
"Which Linux distro did you use?..."
I have the linux Opensuse 11.1
@Hannes
"you mentioned, that you are not able to start the database. Unfortunately, your error message
does not give us any details of what happened"
I follow the Installation´s help file of SAP, I didn´t have any error before this step of the Installation (Start the Database: entering the command startdb).
1) did the installation finish successfully?
Until the request of the License key, the installation goes without errors.
2) logon as n4sadm (su - n4sadm) and execute: startsap n4shost
What is the output?
"No start profiles found"
3) check /home/n4sadm/startdb.log (or any other start*log files there)
This is the content of the startdb.log file:
lun. mars 2 23:05:13 CET 2009
LOGFILE FOR STARTING DATABASE
Trying to start database ...
lun. mars 2 23:05:13 CET 2009
Checking required environment variables
SAPSYSTEMNAME is >N4S<
Start database with xuserkey >c<
lun. mars 2 23:05:13 CET 2009
Connect to the database to check the database state
dbmcli: connect check finished with return code: 0
Database not available
lun. mars 2 23:05:14 CET 2009
Starting XServer
12798 NISERVER NI support started.
WNG 12453 NISSLSRV NISSL Init: SSL: Could not locate licence file
12902 XSERVER started, 'X64/LINUX 7.6.00 Build 018-123-119-055'
lun. mars 2 23:05:14 CET 2009
Starting database
Starting Database Instance...
Error! XUser not found!
Opening Database...
Error! XUser not found!
lun. mars 2 23:05:15 CET 2009
Connect to the database to verify the database is now open
dbmcli check finished with return code: 0
Database start failed
Thank you for another propositions
Jodie

HT201257 AHT does not start on OS 10.8.2 - I see only a grey screen, if I stop pressing D computer will boot.

How can I start AHT without an additional install disk - OS X 10.8 was upgraded using App Store so I do not have an install disk on it,
When I keep the D key presses after pressing the power button, I do see only the plain gray screen. Few seconds after I release D key, the system will boot normally - if I keep pressing the D key, the system will just stay with the gray screen on.
I do want to run AHT to test the memory as I do get 1-2 kernel panics a day, and have no kernel extensions.

I just tried the AHT on my late 2011 15" MBP - everything checked out fine (your post just prompted me to make sure that it's working properly - I've nothing going wrong with my computer). You just have to keep that D key held down for a long, long time - don't release it until you see the AHT onscreen.
While you might be able to rule out bad RAM as a problem with your computer, you could also loop tests running the free Rember... and if you're having kernel panics, you could post a log on here to see if someone notices something unusual (I suspect you meant to say that you have no non-Apple kernel extensions?)/
To post a log of your most recent kernel panic, see http://support.apple.com/kb/HT2546?viewlocale=en_US.
Good luck,
Clinton

My iMac (mid-2011) does not start and AHT is OK

I had a similar issue last June and after I carried my iMac to Genius bar, they decided to replace the HDD on warranty. It solved partially the issue but after uninstalling flah player, everything was fine. So, 3 days ago, when this problem occured again, I uninstalled and reinstalled flash player.
But this time, it solved the problem only for one day (it should mean that is is not related to 'Flash"), and I have not been able to start it ever since.
I tried all kinds of resets and ran a bunch of tests with no result.
When I do the AHT (Apple Hardware Test) from disc2 , result is perfect and AHT does not find any hardware problem.
I tried to boot from disc1 (installation disc) but no way to boot. It could be that I have updated OSX 10.6 to Lion 10.7 and disc is 10.6???
It seems I am stucked. Any idea will be welcome

Have you tried a safe boot, by holding the shift key down as you boot? That will take longer than a regular boot, as it's doing some disk maintenance. If that works, try a normal boot.

My I Mac does not start properly without pressing option and apple keys ,and it freezes

My I Mac does not start properly without pressing option and apple keys ,and it freezes

Try any of the following:
http://support.apple.com/kb/HT1379 Resetting your Mac's PRAM and NVRAM
Disconnect all devices from the computer then do the following:
Boot up from your Snow Leopard Install DVD while holding down the "c" key.
Select the language you wish to use, and then choose "Disk Utility" from the menu bar.
Your HD should appear in a panel on the left hand side of the window which opens. Select it and then click on the "repair disk" button in the right hand section of the window.
Once this process has been completed restart your computer and repair permissions directly from Disk Utility.
If Disk Utility is unable to complete the repair, you will need to use a stronger 3rd party utility like DiskWarrior, Techtool PRO (not Deluxe) or Drive Genius.
Troubleshoot the spinning beach ball/freezing & crashing

Will not start wile holding down the C key

I wanted to run some tests on my system. So I ran the Hardware Test that came with the computer. Everything passed. When I go to do the Disk Utilities I get the dark grey screen with the message "You need to restart your computer....."
Any other ways besides the C key to try to start from the disk?
Thank you

Hi-
Any other ways besides the C key to try to start from the disk?
Insert the disk into the drive, and start while holding the Option key.
When the Startup Manager window loads, you should be given some icons representing the startup volumes available, including the OS install disc.
Select the appropriate icon, and then click the right arrow. The machine should boot to the selected volume.
If the desired boot volume does not show, press the "circular" arrow to refresh.
If you are having trouble booting, make sure you are using an Apple wired keyboard, plugged directly to the towers USB port, not through a hub or PCI card. Also, inspect the cable for kinks.
When I go to do the Disk Utilities I get the dark grey screen with the message "You need to restart your computer....."
This is a kernel panic.
Is this from the Disk Utility in the Applications folder of the System Drive, or, from the Utilities menu of the install disc?
If you are having startup disk problems, you might try a Safe Mode boot (hold Shift while starting). This forces a check of the system drive, and allows for repair, should it be necessary.
Safe mode boot takes longer than a normal boot, so be patient.

My ipod nano 6th generation does not start on pressing the sleep/pause button or pressing both sound low and sleep pause button.it starts while connected to power it is fully charges

i have an ipod nano 6th generation .version 1.2 yesterday i restored it on i tunes using my system window 7. for the last few days it does not start when the sleep/pause button is pressed.or even by pressing the both button sleep/pause and sound minus..It starts while connected to power. and then continues working. I can not put off it and it automatically goes off after some time its performance is ok after starting by connecting to power and then disconnecting the cord.
what would be the reason and what to do?>

Call Apple Care as you are still under warranty.

TS3274 my ipad does not start or reset even. when i hold both buttons only apple logo appears and ipad wont start. plz help somebody

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try restoring see guide
http://www.ipadforums.net/ipad-help/2987-how-put-your-ipad-into-recovery-mode.ht ml

My macbook air does not start! I press the on key and nothing happens.

my macbook air does not start! I press the on key and nothing happens.
this morning when I took my macAir it would nt start and when I pluged it, there was no light indicating a charge.
I checked the charger on my wife's mcAir and it worked.
I plugged it back to mine and the orange light came.
since a few hours, the plug is on with the orange light on, and still I cannot start the computer. Nothing happens!
help!

Try a SMC reset
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
This process helps correct these power issues.
Power
The computer doesn't respond to the power button when pressed.
A portable Mac doesn't appear to respond properly when you close or open the lid.
The computer sleeps or shuts down unexpectedly.
The battery does not appear to be charging properly.
The MagSafe power adaptor LED doesn't appear to indicate the correct activity.

HT201210 While restoring it shows unknown error and exits. Now the ipad does not starts

I tried updating OS from 4.3.1 to 6.1
After downloading it shows preapering for restore
then it quits saying Unknown error
Now the ipad does not starts.
It show only an Apple sign and a status bar.
Noting happens when i press power button
What to do??

Sounds like you need t orestore the iPad with iTunes: http://support.apple.com/kb/ht1414

My computer does not start up right away after I close the top... Is my hard drive going bad? Help please!

I typically just close my computer when I'm done with it, instead of putting it to sleep or logging off. Recently, when I open it back up, it does not start right away. I have to press the power button half a dozen times before it starts. HELP!!

annie1977-
Greetings and welcome.
Try booting from the system install CD/DVD by putting the disk in the drive and starting up while holding down the c key.
After boot-up find the Disk Utility, either on the desktop or under the Apple menu. Select your startup drive and the repair permissions on that drive. See if that helps.
Luck-
-DaddyPaycheck

My iMac does not start.

My iMac does not start. When I turn it on, it stays loading in the half and doesn't continue. Some days before I had updated my iMac to Yosemite 10.10. Everything was ok but yesterday I decided tu reboot it and when it was turning on this happened, it kept stuck at the middle of the bar. I have the latest model of MacBook Air '13.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

"waiting" in itunes. the download does not start.

I have bought and paid for movies in itunes. Now is it just "waiting" in itunes. the download does not start. what do I do?

re: quantization.
Logic can do a "soft" quantize as it's recording, by soft I mean playback MIDI data is quantized for both audio and visuals (piano roll), but if you turn quantize off you will see your notes as you played them.
Select a MIDI track, softsynth or external, in the upper left corner of the Inspector is a Quantize value. Click and hold to see what's available.
While you're there, make sure the Delay value is set to zero.
Also make sure that Preferences/Audio "Recording Delay" is set to zero.
And last, (very important.)
Delete the Logic 10 preferences file AND the shared control surfaces file.
In the Finder, choose Go > Go to Folder from the menu.
Type ~/Library/Preferences in the "Go to the folder" field.
Press the Go button.
Remove the com.apple.logic10.plist file from the Preferences folder. Note that if you have programmed any custom key commands, this will reset them to the defaults. You may wish to export your custom key command as a preset before performing this step. See the Logic Pro User Manual for details on how to do this. If you are having trouble with a control surface in Logic Pro.
then delete the com.apple.logic.pro.cs file from the preferences folder.
Make sure and remove both files.

IPhoto does not start up after upgrading

On my new iMac iPhoto does not start up after migrating. Upgrade from iPhoto 6/Snow Leopard > Lion 10.7.1 with iPhoto 9.1.5. When the conversion is finished I can see the new library, it works allright. And with packet-inspection (or how is that called in English) all maps & data seems to be OK; I can check the seperate pics.
But: iPhoto won't start up a second time (grey screen with infinite spinning wait cursor). The same thing is happening when I add a new library and drop in some pictures.
What can cause this problem?

Option 1
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Choose to Rebuild iPhoto Library Database from automatic backup.
If that fails:
Option 2
Download iPhoto Library Manager and use its rebuild function. This will create a new library based on data in the albumdata.xml file. Not everything will be brought over - no slideshows, books or calendars, for instance - but it should get all your albums and keywords back.
Because this process creates an entirely new library and leaves your old one untouched, it is non-destructive, and if you're not happy with the results you can simply return to your old one. .
Regards
TD

Aperture 3 does not start

I bought Aperture 3 from Apple store, just downloaded the software does not start.
The icon flashes but does not open!
What do I do?

Try running disk utilites and repairing permissions.
Try holding the Command + option key while clicking on the Aperture icon to repair its permissions specifically
When I mentioned click on library itself I should of said locate the Aperture Library (pictures folder?) and double click on that to start aperture. Also to open a lib hold the option key and click on the Aperture icon. A dialog should appear to choose the library. Write back and tell us specfically what you did. we need to know what you performed so we can eliminate options. good luck

AHT does NOT start while holding "D" key

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