AMD K8 CPU overheating

[beaumontdvd]

Originally Posted by itbookham

The hsf is attached with a retention clip rather than screws.

The only pc component that would force a shutdown due to temperature is the cpu, so I am not too sure where to go from here.

yes, but what if its software thats causing the shutdown. I had a temperature monitor program installed that was set to default. But the defaults were not right for my particular pc. The software can force a shutdown, it can also decrease/increase fan speed so maybe the default fan speed has been decreased and hence the reason the cpu is overheating and coretemp is shutting your pc down. Try uninstalling it or system restore if you have recently installed it. This worked for me?

Regards,

[greenbrucelee]

You may have a faulty cpu but it is always wise to explore all avenues first.

for the record a psu can get hot and shut off, faulty ram can also cause the system to shut of unexpectedly too.

since your issue is temp related and you have tried another psu although I don't know if it was a decent one or just some generic one then I would suspect you either have a faulty mobo sensor or cpu is on its way out.

it is very rare to see a cpu die unless it has been abused either by overclocking or constantly pushed but its not impossible for a cpu to give up.

your cpu should be shutting down long before 100 degrees c, if I remember your cut of should be 72.2 degrees c, so you may have a faulty sensor.

do you have another cpu you could test?

[SimonD]

How cool is that HSF? by rights it shouldn't be cool to touch with the machine on for 15 minutes, the idea is that it transfers the heat away from the cpu, ergo the HSF should be hot but not as hot as the cpu.
If the hsf is cool to touch after the pc has been on for 15 minutes your hsf isn't in contact with the cpu well enough and that being the case the cpu is using the thermal cutout to shut down.

I would honestly look at another hsf, one that actually screws down rather than clips.

[itbookham]

Thanks for the all information.

The cpu heat sensor software was installed after the problem arose, just as a double check on the cpu temperature.

It is possible that there is a fault with the hsf, or that it is not seated correctly. I will check this again, but I have already checked it twice.

Faulty memory a possibility - could be the memory stick or motherboard ram slots?

Another possibility the temp. sensor on the motherboard is giving an incorrect cpu temperature reading and forcing the computer to shutdown. If so, this will probably be a replacement motherboard.

[beaumontdvd]

Originally Posted by itbookham

Thanks for the all information.

The cpu heat sensor software was installed after the problem arose, just as a double check on the cpu temperature.

It is possible that there is a fault with the hsf, or that it is not seated correctly. I will check this again, but I have already checked it twice.

Faulty memory a possibility - could be the memory stick or motherboard ram slots?

Another possibility the temp. sensor on the motherboard is giving an incorrect cpu temperature reading and forcing the computer to shutdown. If so, this will probably be a replacement motherboard.

Have you checked the bios temp settings if you have them? are they set to default?

[itbookham]

Hi,

Yes I have also checked the BIOS temperature settings and they are corroborating the excessively high core cpu temperature readings in the Core Temp program.

[itbookham]

I have now cleaned, reapplied thermal paste and snugly reseated the hsf.

In the BIOS PC Health Status, after 20 minutes at idle, the cpu core temp reading is 70 degrees celsius. This is high.

I think the best option is to buy and install a better hsf. Probably the cheapest first option rather than replacing mobo or cpu.

[beaumontdvd]

Originally Posted by itbookham

I have now cleaned, reapplied thermal paste and snugly reseated the hsf.

In the BIOS PC Health Status, after 20 minutes at idle, the cpu core temp reading is 70 degrees celsius. This is high.

I think the best option is to buy and install a better hsf. Probably the cheapest first option rather than replacing mobo or cpu.

So the bios temp reads the same temps as the temp software? Have you restored the bios to default and stopped windows monitering your temp settings from the bios? Could be worth a try?

Dave

[greenbrucelee]

check that you have the right amount of paste on. Too little or too much and it will overheat, check the heatsink is in firmly and does not move, it should be tight infact it should be so secure that if you tried to rip it out it would take half the mobo with it.

your temps should be around 42 degrees c at most when idle preferably mid 30s.