iMac(mid 2007) won't boot

[Ben190]

Okay thanks. What temps should I be concerned about? Should I hear the fan sometimes on the imac? Will it sometimes kick into high?

Thanks

 

[Intell]

If the CPU gets above 190F, then it would be time to be worried. The fans will spin faster if it does get that hot.

 

[Ben190]

Thanks again for all your help.