iMac - started to crash as if power has gone

hariol · hariol #1 (**permalink**)

10-19-2009, 05:09 PM

Hi, could anyone help me , I have an I mac, which is approx 2yrs old, it has started to crash as if power has gone, just switches off, i think it feels like something gets hot and causes it to stop. If you leave the power on i.e. plugged in the switch is on, on the socket, it wont restart, but if you switch the socket off, inotherwords no power going to the unit , you can turn it back on after 5 mins, but it only lasts for a few mins before switching off again.
I would appreciate any help.

Regards Glyn

Wales (uk)

kevinc5680 · kevinc5680 #2 (**permalink**)

10-19-2009, 09:06 PM

I don't know if this helps at all, but I had a similar shut down problem and my keyboard was causing the issue. Once I switched to an authentic apple keyboard, I never had the problem again.

deus_ex_machina · deus_ex_machina #3 (**permalink**)

10-19-2009, 09:48 PM

Installed anything recently, third party RAM perhaps? Checked for clogged vents? Unplug everything and try to boot it. If that works, add the keyboard and go to Safe Mode and you can check logs from there.

hariol · hariol #4 (**permalink**)

10-20-2009, 05:52 AM

Quote:

Originally Posted by kevinc5680

I don't know if this helps at all, but I had a similar shut down problem and my keyboard was causing the issue. Once I switched to an authentic apple keyboard, I never had the problem again.

I have an apple keyboard that came with the unit ??

Thanks
G

hariol · hariol #5 (**permalink**)

10-20-2009, 05:54 AM

Quote:

Originally Posted by deus_ex_machina

Installed anything recently, third party RAM perhaps? Checked for clogged vents? Unplug everything and try to boot it. If that works, add the keyboard and go to Safe Mode and you can check logs from there.

That sound great but bit beyond me to check in safe mode, not sure what i would be looking for ??
Regards
G

deus_ex_machina · deus_ex_machina #6 (**permalink**)

10-20-2009, 09:35 AM

Hold down Shift while booting (will take considerably longer) and it'll say Safe Boot to let you know it worked. When all is booted up, go to Applications/Utilities/Console and find your system log. At the bottom of the last day it crashed should tell you the last thing that happened. You can copy and paste what the log said here.

joster.macedo · joster.macedo #7 (**permalink**)

10-20-2009, 01:53 PM

hariol,

I had a similar situation with my MB, the difference being that my laptop was shutting itself off during boot. I thought the problem was hardware related until I booted from my external HD. The issue was that my main HD was corrupted. I had to reformat it and restore my backup. After that I run diagnostic tools and found no more errors.

Joster

deus_ex_machina #6 (permalink)
Member Since: Aug 06, 2004 Location: Tejas Posts: 1,720 Mac Specs: 2GHz Mac Mini 2GB RAM 160GB 10.6.2 \| MDD DP 1.25GHz G4 1.5GB RAM 10.4.11 \| 233MHz iMac G3 10.3.9	10-20-2009, 09:35 AM Hold down Shift while booting (will take considerably longer) and it'll say Safe Boot to let you know it worked. When all is booted up, go to Applications/Utilities/Console and find your system log. At the bottom of the last day it crashed should tell you the last thing that happened. You can copy and paste what the log said here. EOF website portfolio
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iMac - started to crash as if power has gone

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hariol #1 (permalink)
Member Since: Oct 19, 2009 Posts: 3	10-19-2009, 05:09 PM Hi, could anyone help me , I have an I mac, which is approx 2yrs old, it has started to crash as if power has gone, just switches off, i think it feels like something gets hot and causes it to stop. If you leave the power on i.e. plugged in the switch is on, on the socket, it wont restart, but if you switch the socket off, inotherwords no power going to the unit , you can turn it back on after 5 mins, but it only lasts for a few mins before switching off again. I would appreciate any help. Regards Glyn Wales (uk)
	QUOTE Thanks

kevinc5680 #2 (permalink)
Member Since: May 20, 2006 Posts: 41 Mac Specs: PowerMac G5 Dual 2.0Ghz, 250GB Hard Drive, 4GB RAM, GeForce FX5200, iPhone 3G 8GB	10-19-2009, 09:06 PM I don't know if this helps at all, but I had a similar shut down problem and my keyboard was causing the issue. Once I switched to an authentic apple keyboard, I never had the problem again.
	QUOTE Thanks

joster.macedo #7 (permalink)
Member Since: Apr 02, 2008 Location: Florianopolis, Brazil. Posts: 25 Mac Specs: 8-core MacPro	10-20-2009, 01:53 PM hariol, I had a similar situation with my MB, the difference being that my laptop was shutting itself off during boot. I thought the problem was hardware related until I booted from my external HD. The issue was that my main HD was corrupted. I had to reformat it and restore my backup. After that I run diagnostic tools and found no more errors. Joster
	QUOTE Thanks

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