How can I tell if my start up problems are RAM related.

I keep getting a blank white page a third of the way thru my startup sequence. I have tried everything I can think of to fix this but I now think it is due to a faulty RAM card. How can I find out if it is due to a bad RAM card or not?

Faulty RAM or slots at startup are generally detected during the process and signaled by tones before the computer even puts the screen with the Apple logo up. Do you hear startup tones? If there are no tones, then it more likely is the hard drive.

Similar Messages

  • How can I tell if my Time Machine backups are encrypted?

    Hi - I would really appreciate it if someone could help me find out if my Time Machine backps are actually encrypted.
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    - One possible clue might be: When I go into Time Machine preferences, and click on 'Select Disk...' (as if to choose another disk to back up to), and select the disc that Time Machine currently backs up to (i.e. the Time Capsule disc), it does show an 'Encrypt backups' checkbox at the bottom of the window... however this checkbox is unchecked and also greyed out.
    Thanks in advance
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    a_quinn wrote:
    - Because I originally created this Time Machine Backup (to the Time Capsule) back in my 'OS X Lion' days,
    I wondered; you posted in the Mountain Lion forum, but your profile still says Lion.
    that means that my backups now (and moving forward) will continue to be un-encrypted
    Correct (as of now, anyway).  You cannot encrypt existing network backups.  I doubt that will be available in the future, and would take forever. 
    - The only way to encyrpt my backups now, moving forward, is to remove this Time Capsule disc (from Time Machine Preferences), and start all over again ensuring that I check the checkbox next to 'Encrypt Backup' when selecting the Time Capsule's disc to backup to.
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    Trying to keep a couple of years worth of backups usually isn't a good idea.  It's a very complex structure, so the odds of damage increase, it takes much longer to populate the TM browser, and it works slower and slower, and if you didn't need something for 6 months, are you really going to need it in 2 years?

  • How can I tell if signals from two devices are truly synchronised?

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    Hi Lynn,
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    I understand the concept of how the signals will look if they're not synchronised and your demo shows that nicely. I guess I have been perplexed by someone else telling me that the timestamps in the output file (and following from that I assume timestamps on a waveform graph) do not give an indication of whether signals are synchronised. The reason they gave for this was that the timestamps are manufactured by the software, not the DAQ hardware.  They suggested that I put the setting "ignore waveform timestamps" on my waveform graphs, and then check that both signals come in at the same time (i.e. both start at zero), but I'm not convinced about this. 
    When I use an analog trigger, neither the timestamps in my output file or on the two waveform graphs are synchronised. If I don't use the trigger, then there is far less disparity in the timestamps in the output file. I've attached two output files here, and my VI.
    This is my first attempt to synchronise a voltage module and a strain gauge module on an X-series chassis, so I want to make sure that I'm achieving the best synchronisation that I can, and the difference in behaviour with and without the trigger worries me.
    Thanks,
    Claire.
    Attachments:
    without trigger.txt ‏5 KB
    with trigger.txt ‏6 KB
    Multi-Device Synch-Analog Input-Finite Acq-Analog Start_Claire_wDigitalin_12June2012 PTbridge.vi ‏196 KB

  • How can we tell if a VI is already running before calling Start Asynchronous Call?

    The new Start Asynchronous Call node is awesome for spawning multiple instances of reentrant VIs.  However, I've stumbled a bit in using it for non-reentrant VIs.  The old practice of using the "Run VI" method would allow us to check the Execution.State of the VI before invoking the method to run it.  That way if the State was Running or Run Top Level, we could skip the invoke node and just use a property node to open its front panel.  WIth the Start Asynchronous Call node, it looks like we have to use a strictly typed static VI reference, and when we open the VI reference, the VI gets reserved and its Execution.State = Running.  So, how can I tell if it is not just reserved by the thread but actually executing before making a redundant Start call?
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    Dan
    Solved!
    Go to Solution.

    Just throwing it out there, I know I'm a year.5 late on this but if it's a psuedo-modal dialog or some other window that you only want a single instance visible at one time, you can check the FP.State property on the strictly typed vi reference. If it's loaded and visible to the user it will be "Standard", if it was closed or not opened prior then the state will be "Closed".
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  • How can I tell my computer what applications to open upon start up?

    How can I tell my computer what applications to open upon start up?

    If your Mac is running OS X 10.9 Mavericks.
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    Do one of the following:
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  • How can you tell if a pic hasnt been tagged by iPhoto, and do you then...

    How can you tell if a pic hasnt been tagged by iPhoto, and do you then do you then have to draw "missing box" around them
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  • How can you tell who the original sender of a group text is on an iPhone 5, when all that appears is a list of recipients in no particular order

    how can you tell who the original sender of a group text is on an iPhone 5, when all that appears is a list of recipients in no particular order? I can't seem to identify the sender in the details list.

    Start a separate thread to the original sender.

  • How can I tell if my Muse is up-to-date?

    I know how to check Muse > About Muse to see which version I am running. But, how can I tell if I am running the latest version of Muse? I can't seem to find anywhere on the Adobe site that will tell me what the latest version is, nor, can I find a "check for update" command within Muse.

    The 2.0 release is not yet out, however, you can participate in the Adobe Muse Public Beta you can get regular updates!
    Here is a link on how to get started:
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  • How can I tell if I am receiving 4G on my new Verizon WiFi/4G iPad?

    I recently purchased a the new (3rd gen) Verizon WiFi/4G iPad.  When I activate the cellular service, all that I see on the screen is Verizon and the bars for signal strength. How can I tell if I am receiving 4G or 3G data?

    My understanding is that  when you start it up that you will have service for at least one month.  The other thing to be aware of is the two types of deactivating your account.  You can see my post in the iPad 2 forum.  But basically, you can suspend or cancel your account when you don't want to use the data plan.  If you suspend your account, it will automatically start up again after a specific period of time unless you know to and remember to resuspend your account.  The advantage of suspending it is that you can activate and deactivate on the web.  If you cancel the account it will not start up again automatically, but I believe you have to call to start up the data plan.

  • How can I tell the device is connected to itunes 12?

    how can I tell the device is connected to itunes 12?  I have Windows 8.  I hear that the device is connected, but don't see the device to manage.  Only thing that happens is on the phone it says Trust the computer..   I say Trust and nothing happens.

    in ituens at the top where you see the small icons for Music, Movies, TV etc when your device is connected you will see a small icon representing your phone or ipad etc popup click that and it will show you the usual interface for backup and syncing.
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    Worst case scenario you nee to resatrt

  • Help Please! How can I tell what is stored on my iPod?

    I just recently got a new iPod Nano, and started using iTunes to upload music to it. But, for some reason, I can only fit like 60 or so songs onto it. I have a 1 GB Nano. If I click onto my iPod in iTunes, it says at the bottom of the screen that I have 59 songs, 3.2 hrs of music, 223.2 MB, but just above that, where the bar is that shows how much is stored to my iPod, it says I have used 750.5 MB and have 142.1 MB free. Where is the other 527.3 MB being used and how can I tell? Is it being used in the games? I have no pics or videos at all on my iPod. It's getting very frustrating because I can't fit very much at all on my 1GB Nano. Help!

    sussan-b,
    Does the bar showing used space have a portion labeled "Other"?
    Usually other is files that have been copied to the iPod directly, or space you have told the iPod to reserve for other files by enabling disk use.
    This article has more information and screenshots:
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  • Hey. i'm about to travel to thiland and i'm thinking to buy there Macbook air\pro. how can i tell if it's fake?

    hey. i'm about to travel to thiland and i'm thinking to buy there Macbook air\pro. how can i tell if it's fake?
    thnks

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  • How can I tell how much is uploaded to iCloud?

    My entry appears to have been deleted from yesterday, I think.
    Anyway.
    How can I tell what of my 7gb of data that needs uploading to iCloud has actually gone to iCloud?
    It's mostly photos. But seeing as the Photostream will only give me new photos, not the old ones there's no way of telling how far I've got.  I can get about 1gb of data uploaded each night but I can only tell this is happening from looking at my ISPs stats on my account. The blue bar on my iPhone starts from the beginning each time.
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    I'm not sure how else to phrase this?  I just want to know how far along my upload is, as I cannot do it all in one sitting - it would take ages - and every night when I start it rolling again the blue bar just starts from the beginning.

  • How can I tell if movie fully downloaded on i-pad

    How can I tell if movie rented from I-tunes fully downloaded  on my Ipad? It only loads partially and then goes to sleep. Continues downloading when I wake it up. Forgot to finish and today I don't see any download pending. But I'm sure it didn't finish. How can I check without starting the movie - which only has 24 hours to view?

    yes - it shows in the Video app - but it did yesterday too when it wasn't fully downloaded and the bar graph showing downloading progress was still moving.

  • PAL or NSTC, how can i tell what format the vid clip is?

    The 2nd abbreviation might be wrong...
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    At the top of the iMovie project window it will tell you by giving the name you gave to the project as well as 'DV NTSC, or DV NTSC Widescreen.
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    As you are in the USA yours will probably default to NTSC which is the TV system you use there. In Europe we set it to PAL which is what we use here.
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    PAL used to stand for 'Prolongs Active Life', but that was actually the tag-line in a dog food commercial! But they are useful mnemonics to remember them by!

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