I have an Intel P4, D945GCNL mother board with 1 GB RAM... My sytem overheats Extensively and shuts down when i work on Games, or while DVD wrting (High memory usage works). I cleaned my processor heat sink, replaced the thermal paste even after that the problem is not solved... I downloaded Intel Desktop Utility to check my Fan speed and Temperature... but nothing is getting displayed except for HDD temperature.... Even In my BIOS, only the Processor temperature (around 105 ~ 107*C) is displayed but by heat sink is cool and my Fan speed is not displayed..... can any one sort out this problem...
Most improtantly... I updaed my motherboard to 945 GCNL a month ago..... is that i need to change my processor???? or is it any internal malfunctioning of the motherboard... If so Can any one suggest me a good processor for this motherboard.
Or is it anything else.....
I'd like to start off saying that I'm still new to computer hardware management, so take all of this with a grain of salt. I'd still like to help and see that you get your computer working.
It seems as though you've taken the right steps so far, and that it seems as though your computer still overheats despite your efforts. I know with myself, my overheating laptop was always giving me problems, keeping it on a flat surface instead of my lap ended up working just fine O.O;; but back to your problem!
What tends to be the case with most upgrades is the power consumption, a simple power source upgrade can actually help. More beefy upgrades on your computer obviously need more power to drive their never ending work :P
If upgrading your power supply does not work you may want to go over your hardware again and check to see if everything (mainly the fan/heat sink etc.) is connected securely, and is free from any dust/lint or crud that may be hampering physical performance.
A side note: Normal recommended working temperature of a hard disk is 35-40°С. If at any point that increases, performance can be limited. Specific hardware coolers can help with this, or going with an HDD software program to manage device temperature can help too.
I hope all of this helped somewhat, I'm still getting used to this stuff!
Good luck bud, hope all is well on the computer front.
Even In my BIOS, only the Processor temperature (around 105 ~ 107*C) is displayed but by heat sink is cool and my Fan speed is not displayed..... can any one sort out this problem...
The CPU fans RPM is usually displayed in bios, have you doubled checked to see if the CPU fan is plugged in the right socket, there should be three wires on the fan, the middle one being for the taco pulse to tell the bios what the RPM is, you did say the heat sink was cool, just wondering how you conclude that something is overheating?
As IcantWin mentioned the power supply in many cases if you look back through these boards is one cause for the problem you described, a faster cpu/mobo means greater demands on the power supply not only in power but in regulation, the faster the clocking pulses the faster the power supply has to supply the power which must be reasonably free of any ripple current.
One clue that could be had is by checking the power supply voltages in bios, they can be about 0.5 Volt above but never below about 0.3V or 300mV below whats stated, bear in mind when you are in bios the power supply is almost on idle as no work is being done.
The only way to prove is to try a known good power supply, heres a Dinky power supply calculator you might like to try, a point to note, it's always better to get one with a higher wattage than required, it's the machine what determines how much power needs to be used the power supply has only to provide it on demand.
One thing about heat sink paste, I hope you used the right stuff something like or better than Arctic Silver, the plain old white stuff you see on HI-FI and TV heat sinks is useless for CPUs and the thermal tabs you can use instead are not as good as they increase the CPUs temperature by about 3 or 4 degrees C, you shouldn't use both at the same time... and you only need the slightest of smearing put too much on and you are better not using any at all.
Trying the power supply is a good suggestion, after all it's going to be one of those elimination jobs - try it and see....
.... just like one computer I have, it either shut down froze or blacked out momentarily, it was the hard drive giving me grief and funny thing it would only do it when I was doing something important like typing a simple letter, I ended up with a spare power unit.
Computer Overheating - Help ME 
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