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HT201257: Using Apple Hardware Test

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Title			Views	Latest activity
where can i actually download AHT? in MacBook Pro by OGELTHORPE	Show 0 Bookmarks0	5	291	March 29, 2013 5:04 AM by OGELTHORPE
According to http://support.apple.com/kb/HT4904, my Mac should be able to update a firmware allowing me to run a diagnostic test on my computer; however, when I try to download the update, it says "this update is not supported on this computer". Why? in MacBook Pro by SchizoDJ	Show 0 Bookmarks0	3	303	March 16, 2013 5:48 AM by SchizoDJ
My trackpad takes a moment to respond usually it would react quickly, I don't know what to do. in MacBook Pro by clintonfrombirmingham	Show 0 Bookmarks0	1	193	March 2, 2013 1:36 AM by clintonfrombirmingham
Every time I start up, the hardware test pops up. Is there a way to start up without the test coming up? in iMac by babowa	Show 0 Bookmarks0	3	286	February 17, 2013 4:31 PM by babowa
Ethernet Port in iMac by joan89	Show 0 Bookmarks0	21	788	February 17, 2013 3:06 AM by joan89
How do I get to the Diagnostic Center? in Mac Pro by Grant Bennet-Alder	Show 0 Bookmarks0	1	294	February 8, 2013 10:42 AM by Grant Bennet-Alder
Does anybody know what hardware test error code this is 4SNS/1/40000001: TCOH -1.704 in iMac by shldr2thewheel	Show 0 Bookmarks0	1	233	January 28, 2013 9:12 PM by shldr2thewheel
Greetings. I bought a 21.5-inch, Late 2009 with Snow Leopard. The application Osirix for medical images invite me to upgrade to Lion. Consequently The Superdive stopped working and also LAN. I find that Apple is aware of it. in iMac by mende1	Show 0 Bookmarks0	8	276	January 27, 2013 11:41 AM by mende1
s.m.a.r.t. in iMac by Mike Sombrio	Show 0 Bookmarks0	1	196	January 11, 2013 4:36 PM by Mike Sombrio
My son's new mac pro stuck on apple logo after update in MacBook Pro by a brody	Show 0 Bookmarks0	1	300	December 30, 2012 3:10 PM by a brody
Apple Hardware Test (AHT) on upgraded iMac in iMac by EnjKat	Show 0 Bookmarks0	2	479	December 28, 2012 1:20 PM by EnjKat
Isight camera suddenly not detected anymore on MBA Mountain Lion. How to fix? in MacBook Air by geckus	Show 1 Bookmarks1	27	6303	December 24, 2012 10:10 AM by geckus
software update freezes my computer, and I can't enter diagnostics. Help! in MacBook Pro by Linc Davis	Show 0 Bookmarks0	1	158	December 11, 2012 8:38 PM by Linc Davis
Fan on my MacBook Pro came on and will not turn off, what could be wrong or how do I fix? in MacBook Pro by MAYRA4A	Show 0 Bookmarks0	9	544	December 5, 2012 2:15 AM by MAYRA4A
I just bought an imac in september 2012. And i just find out that my microphone is not working. So i did an apple hardware test and with no problems found? I have sound but no one can hear me, not even the computer. Should i bring it back to the store in iMac by rkaufmann87	Show 0 Bookmarks0	13	418	November 22, 2012 4:20 PM by rkaufmann87
Apple Hardware Test will not load on startup on my early 2008 3,1 Mac Pro in Mac Pro by JimAspen	Show 0 Bookmarks0	5	827	November 20, 2012 1:36 PM by JimAspen
for me it doesnt work , I hold the D key , but nothing happened :( , what should i do to check my Hardware ? in MacBook Pro by John Galt	Show 0 Bookmarks0	2	302	November 20, 2012 1:00 PM by John Galt
Screen/ Display Problems- maybe hardware related? in Mac Pro by Grant Bennet-Alder	Show 0 Bookmarks0	4	410	November 13, 2012 8:10 AM by Grant Bennet-Alder
hardware test using an external optic device (iMac) on macbook pro 9 years old via firewire. What to do? and how to do it? in MacBook Pro by adsan1	Show 0 Bookmarks0	2	176	November 13, 2012 7:39 AM by adsan1
AHT does not start on OS 10.8.2 - I see only a grey screen, if I stop pressing D computer will boot. in MacBook Pro by cbs20	Show 0 Bookmarks0	3	630	November 9, 2012 8:56 AM by cbs20
I have run this test but still I am getting screen which has loading icons and no loading of OS. Please help I have no clue in this. in Mac mini by RRFS	Show 0 Bookmarks0	2	230	October 31, 2012 8:53 AM by RRFS
I am getting a circle with a slash. Whats the problem? in MacBook Pro by sig	Show 0 Bookmarks0	1	370	October 24, 2012 11:32 AM by sig
How can I get my MacBook Pro 2010 to boot? in MacBook Pro by ds store	Show 0 Bookmarks0	1	182	October 20, 2012 6:33 PM by ds store
Apple Hardware Test in MacBook Pro by Linc Davis	Show 0 Bookmarks0	8	409	September 10, 2012 12:18 PM by Linc Davis
can't run Apple Hardware Test in iMac by BDAqua	Show 0 Bookmarks0	1	336	September 9, 2012 12:59 PM by BDAqua
Apple hardware test how to start it? in MacBook Pro by klepa	Show 0 Bookmarks0	8	525	August 30, 2012 5:22 AM by klepa
It's weird but I've done all the steps and I can't enter to the hardware test. in MacBook Pro by cbs20	Show 0 Bookmarks0	6	263	August 8, 2012 7:07 AM by cbs20
Unable to use Apple Hardware Test - Lion - Mid 2010 MacBook Pro in MacBook Pro by BillConroy	Show 0 Bookmarks0	8	762	August 8, 2012 6:59 AM by BillConroy
Apple hardware test does not finish in Mac OS X v10.7 Lion by baltwo	Show 0 Bookmarks0	1	547	July 27, 2012 12:54 PM by baltwo
Delete Key not working... in MacBook Pro by sig	Show 0 Bookmarks0	1	675	July 20, 2012 9:46 AM by sig

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