It said Hold Down Power Button Upon Shutdown

Question

Hi.I have the late iMac 2009 with 8GB and the latest OS X . The memories were installed by Apple. I've had this since March 2010. I don't leave it 24 hours ON or any. I have Boot Camp at 80GB For the first time when I shut it down it said hold the power for 4 seconds. It looked like a hardware error. Is it normal from time to time? Is it the Seagate hard drive or the memory? What can I use to test this iMac if it's OS and components are all good? Please advice. Thank you in advance.
Gbu.

Answer 1

Alvin777 wrote:
when I shut it down it said hold the power for 4 seconds.
if it looked like this ...
you've see a *kernel panic*
read all about KP's here _*Resolving Kernel Panics*_ and here _*http://support.apple.com/kb/HT2546*_. for OS X 10.6 specifically, see this: http://docs.info.apple.com/article.html?path=Mac/10.6/en/8965.html.
also
_*What is a kernel panic*_,
_*Technical Note TN2063: Understanding and Debugging Kernel Panics*_,
_*Mac OS X Kernel Panic FAQ*_,
and
_*Tutorial: Avoiding and eliminating Kernel panics*_
JGG