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- Stop Overclocking your CPU.
- Make sure your Heat Sink is placed properly above the processor.
- Clean the Processor fan, Heat Sink and other peripherals.
- Use High Speed fans.
- Use CPU Heat Sink Paste in the processor.
- Fix OS registry with reliable program like I always use Reginout.
- Shut down your computer atleast two hour a day.
Hello Sounds like you need a new cooling fan.You may be able to save yours with some electrical contact cleaner spray. Remove fan and spray. The cpu will heat up quick and shut down everything to protect itself.Im sure once you get a new fan you will be up and running again. You may consider reapplying new conductive paste to the processor while you have the case open.
see do one thing check the cpu fan whether it is working properly and is not producing any noise if it is then probably you need to replace your cpu fan with a new one also makke sure that your power supply fan and chasis fan is working as excess heat gets generated in the system they remove it
to change the cpu fan
1.see it will depend on what kind of cpu socket you have pin or pinless
for pin-open the plastic clamp on the fan
for pinless -unscrew the heatsink
2.remove the heatsink and replace it it will be much better if you replace the full heat sink with a new one .also don't forget to put thermal grease compound for effivient heat transfer in between the cpu and the heat sink contact generally these days heat sinks come with pre-applied thermal componds but still it is recomended to apply it firmly over the cpu before installing the heat sink on it
3.if you wish to install the old heatsink by just replacing the top fan then replace the fan and rub the bottom of the heat sink with a sand paper to make it even and free from dust and oxide apply thermal compond and install it on the processor .plug bak the cpu fan header cable .
start your system it will stop overheating..
Replace cpu fan , failed cpu fan might have caused CPU stoped working. If you are sure about the CPU fails then replace the CPU. If the problem seems continues after that too, then PC might have failed to boot due to other reasons. What shows on the screen once you power on the computer? There could be , motherboard , or harddisk faults too. Try unplugging other parts and see if the computer boots from CD or USD flash or floppy drive!!
Once you know that motherboard works then replace the CPU. There could be BIOS setup problem. Did you check the BIOS for harddisk is set properly.
I don't know why but some systems which have XP (SP1 or SP2) simply can't take the upgrade to SP3. Your system appears to be one of them. For instance our family's computer had XP SP2 and upon upgrading to SP3 we received a fatal crash while XP was loading into normal operating mode.
I managed to resolve the issue by booting to safe mode and restoring the system to a date before I installed SP3. Sorry that the new SP doesn't work for you.
When you say power is going to the mobo, are other fans and lights turning on? You also may have forgotten to plug in the large ATX power cord from the PSU, or the smaller 4-pin rectangular 12V power cord. Is the correct local voltage setting for your PSU selected (110 or 220)?
This is normal behavior. Fans normally only run when they are needed, and your computer has multiple temperature sensors that direct this behavior (they are primarily located on the CPU, which could explain why the fans all worked when you took the CPU out). You should only be concerned about the fans stopping if your computer is, indeed, overheating.
The bearings in the fan or internal mechanism may have burned out. If the fan does not generate a cool enough environment, you run the risk of frying the processor and other motherboard components that are temperture sensitive.