imac power issue

[Kirmu]

hi, my imac had been turning off by itself these two days, and I need to wait for around 15-20 min to get it working back on again. I have just bought an 320gb external hdd ibook a week ago, i suspect that it may be the cause for the power faliure to happen.

I have bought this imac for 1 and a half years. Any help will be appreciated! Thanks

edited: the imac turns off by itself while im using boot camp

 

[ray648]

Does it turn off at other times too or only while using boot camp? Sounds to me like it could be caused by overheating (maybe a failed fan). Ive not heard of this on imacs, but it would make sense that it would turn off then not turn on until it had time to cool down a bit?

 

[Kirmu]

Does it turn off at other times too or only while using boot camp? Sounds to me like it could be caused by overheating (maybe a failed fan). Ive not heard of this on imacs, but it would make sense that it would turn off then not turn on until it had time to cool down a bit?

hi, thanks for ur reply. Yup, at first i thought it was the cause of overheating too. so i let it cool down awhile, around 2 hours, before turning on again. but the problems insists on a few times until now again. it happens during restarting too.

 

[Consultant]

External drives is highly unlikely to be the source of shutting down.

If it only happens in windows, then it's a Windows problem, not iMac power issue.

Did you install the proper drivers that are located on the Leopard DVD?

 

[johny5]

does it just power itself off or shut down via the normal windows shutdown procedure?
Does it power off when using the Mac partition?

I think you may have a virus in windows, install a checker.

To check your temperatures and fan speeds install Istatpro on your Mac partition.

 

[slabman]

iMAc Shuts Down

I also have the shutdown problem. 20 in., 2.4 ghz with Leopard. At ANY time is is prone to just black out the screen and will do so again upon re-booting and then maybe work fine again 'till the next time. This started the first week after purchasing. When it re-boots, it'll go right back to the same screen. No Windows installed.

 

[Kirmu]

It just power off by itself, black screen. it happens once before when booting into mac, but not in mac desktop itself. By the way, im using mac tiger os.