[hamsher]

Well basically I have this little problem and was wondering if anyone had this before or could explain why or maybe suggest a fix? My iMac G5 has on occasion when its asleep the fan seems to kick into overdrive and wont stop and the machine wont wake up? And now when I startup the 'sleep' light on the front comes on for a while then either the fan kicks in again or the screen will switch on the apple appears and then the machine does nothing? Im a little worried please help.

[hamsher]

Does anyone have some advice for this please as I have never had any mac behave like this before and it is now regularly crashing on startup!

[hamsher]

http://forums.macnn.com/showthread.php?t=286470

Looks like someone else is having a similar problem? Im going to get a backup HD tonight. Anybody else getting slow startup (literately minutes before the screen lights up?) or crashing on startup and having the fan go crazy at any point?

[experimental]

My second iMac 17inch 2gig rev2 is doing the same. Takes 10 minutes or more with 3 to 4 reboots to get it cracking. I have re-installed the system from scratch and run TTpro and Apple Hardware test with all results to <Pass>. I'll get the back off when I get time and go throught he rest off the diagnostics before attempting to have the HD replaced. Best of luck and let us know if you found a cure.