iMac does not boot
I have a 2.4 GHz iMac Intel 24". During the last few months (3-4) the spinning frequency of the fans increased. I have been looking up the processes in the Activity Monitor but couldn't find apps that were asking too much of the processors.
A few days ago all of a sudden the iMac turned itsself off and restarted a few seconds later. since a 3-4 weeks I kept a close watch to the fans' speeds in StatPro. The results: optical drive 3000 rpm, Hard Drive 5000, CPU 3500.
Last night the iMac shut down again and it wouldn't reboot even after tipping the Power Button. After 15 minutes the iMac rebooted itself. Since then the iMac shut down several times.
I was able to run a Hardware Test and as a result I got the following code: 4SNS1/40000001:VGOR-10.644
Today when I got home from work my wife told me that the iMac shut down and didn't reboot.
I managed to reboot, performed a PRam reset. Then I reset the SMC after removing the Power cable.
I rebooted and after a few seconds after the startupboing the iMac shut down itself. After that trying to boot resulted in a decrease in time before shut down.
At the moment the only thing that happens after touching the power button is the spinning of the dvd-drive. Nothing else happens...
Is it possible that the pram-battery is empty? Is it sensor related?
Maybe helpfull for diagnostics: the dvd-drive doesn't function anymore since at least 2 months...
happy with all suggestions,