iBook G4 overheating

[Cavan]

hello
i have an old iBook G4 after few minutes of turning on that will not stop overheating. It will freeze and become unresponsive, and the bottom gets hot. Also, when it overheats, for some reason the date and time reset no matter how many times I fix it. I am running OS X Tiger (fully patched 10.4.8), with 768MB of RAM. Any one can help me ?thank you

[Simond]

What you are feeling getting hot is the graphics card and the PowerPC CPU/processor chip. The ATI graphics cards and the PowerPC processors (Intel and AMD processors for that fact as well) tend to get hot. They have between 50 million to 150 million circuits and transistors running electricity through them millions of times per second, this builds up electrical resistance fast and generates heat. Since laptops have less air-breathing space in them than most desktop computers do, their processors and graphics cards can heat up even faster.

[Kirtikumar]

why you worrying sent it to an apple store and they will fixed it....

[Gonzo]

From my experienced ill suggest that the PRAM battery has gone out so replace it and that it needs a new fan...to do that correct.

[Pugsly]

However I didn't think that Apple laptops have a PRAM battery.well for overheating use a freeware utility called Temperature Monitor 4.7 It gives a simple readout of various temperatures within your Mac and what the maximums temperatures can be.