Well i have a pc here with a 1.25 gigahertz AMD Athlon processor and a Gigabyte 7VKML 1.x mobo, the cpu fan would on occasion get loud, soon the pc would shut down, after about 15 min or so, i move the mouse it would come back to life, so i got a new fan and now when i press the pwr button it comes on for about 20 sec then shuts down, tell me someone has had this happen before a fixed it without replacing the cpu or the mobo.???
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It all started with a loud fan
- Thread starter lamar225
- Start date
electronicsfreak
Technical User
Sounds like your processor is overheating. I think you might have a bad fan. Check it and see if it needs replaced. Also look to see if you see any oversize capacitors on the motherboard.
lamar225
Likely you have fitted the fan 180degrees out! the wrong way around!
The recess in the base of the heatsink must be positioned so it is located over the raised cam box on the CPU socket otherwise it does not sit squarely on the core, heat transfer between the CPU core and heatsink will be extremely poor resulting in an overheating CPU and shut down.
I hope you haven't permanently damaged your CPU.
Remember also you must fit with a small amount of heat transfer paste applied to the raised core of the CPU.
Martin
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Likely you have fitted the fan 180degrees out! the wrong way around!
The recess in the base of the heatsink must be positioned so it is located over the raised cam box on the CPU socket otherwise it does not sit squarely on the core, heat transfer between the CPU core and heatsink will be extremely poor resulting in an overheating CPU and shut down.
I hope you haven't permanently damaged your CPU.
Remember also you must fit with a small amount of heat transfer paste applied to the raised core of the CPU.
Martin
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I had the same problem with my build in the begining. I recently built a Celeron D 2.8 Ghz on an ASRock mobo. When installed the heatsink for the cpu i think i messed up because i would get the exact same problem as the other guy, my system would shut down after a couple of seconds so i presumed that it was caused by the temperature of the cpu, so i removed and reattached the cpu heatsink. Problem solved, however now my cpu runs at 54 degrees C idle. I probably damaged the thermal interface which is causing the high temp's when i reattached the heatsink. The case i used is also small (ATX) and the fans on the case, 3 altogether, SUCK. So i dont know what it could be, heatsink, thermal materical, sucky case fans, or small cluttered case? Anyone with any suggestions.
One more thing, mobo temp is 33 C and i am using a 500 W PSU, which is about 1 1/4 inches away from the cpu heatsink.
One more thing, mobo temp is 33 C and i am using a 500 W PSU, which is about 1 1/4 inches away from the cpu heatsink.
arafuna, you should likely post your own as each situation differs, plus people now have to address 2 different people.
As for your situation, best thing would be to take off heatsink and fan and clean cpu and heatsink off. The install a good quality thermal paste and re-install the cpu\heatsink\fan unit.
As for the case fans, you should, in combination with your power supply as well, have a situation where air is coming in the bottom or side and going out the top. I have seen people put opposing fans in and they nullify each other. Sometimes it even pays to open the power supply and turn the fan around so air blows out. You have to be very very careful, even with the power supply unplugged there is still very high voltage there. I use rubber gloves but its not necessary, just be careful is all if you should reverse a fan.
As for a small, cluttered case, a larger case would be the fix. Or buy the ide cables that are rounded and replace your existing ide cables, same with floppy cable. And tie all internal wiring off to the side to improve airflow.
Good advice + great people = tek-tips
As for your situation, best thing would be to take off heatsink and fan and clean cpu and heatsink off. The install a good quality thermal paste and re-install the cpu\heatsink\fan unit.
As for the case fans, you should, in combination with your power supply as well, have a situation where air is coming in the bottom or side and going out the top. I have seen people put opposing fans in and they nullify each other. Sometimes it even pays to open the power supply and turn the fan around so air blows out. You have to be very very careful, even with the power supply unplugged there is still very high voltage there. I use rubber gloves but its not necessary, just be careful is all if you should reverse a fan.
As for a small, cluttered case, a larger case would be the fix. Or buy the ide cables that are rounded and replace your existing ide cables, same with floppy cable. And tie all internal wiring off to the side to improve airflow.
Good advice + great people = tek-tips
@Lamar225 - probably, as stated, heat related... wrong fitting of the HS-FAN, Dust build up, or PSU going slowly out on you...
@arafuna - on INTEL CPU, I have yet to put a HS-FAN on wrong, they are almost failsafe... you can't damage the SENSOR either, as it sits below the CPU... the question is, did you use THERMAL PASTE at all?
Ben
"If it works don't fix it! If it doesn't use a sledgehammer..."
@arafuna - on INTEL CPU, I have yet to put a HS-FAN on wrong, they are almost failsafe... you can't damage the SENSOR either, as it sits below the CPU... the question is, did you use THERMAL PASTE at all?
Ben
"If it works don't fix it! If it doesn't use a sledgehammer..."
the thermal paste was attached to the bottom of the heatsink. The cpu didnt come with a tube of the thermal material. I read another forum that clereon D run warmer than other cpu's, but i honestly think that 54C idle is still ridiculous. What i might do is get better case fans, and see how that helps.
About installing the stock heatsink: the motherboard had instructions about how to install which was different than the Intel instructions. I followed the Intel instructions the first time i put on the HS, the second time i did what the mobo said and solved the automatic shut down, but still was warm for an idle cpu. The instructions were to place heatsink on the cpu w/ cable closest to the fan connecter, than you had to turn these 4 connecters on the HS clockwise and push down into the mobo, if it wasnt clockwise it would not be securly connected to the cpu, causing bad cooling.
Does anyone know any good websites that have temps for cpu's?
Lamar225, did you find any resolve to your situation? Your problem was most likly due to bad cooling just like mine was, and if the cpu isnt damaged, which most likly is not because the mobo protects the cpu overheating by shuting down the system BEFORE it gets to a damaging temp.
About installing the stock heatsink: the motherboard had instructions about how to install which was different than the Intel instructions. I followed the Intel instructions the first time i put on the HS, the second time i did what the mobo said and solved the automatic shut down, but still was warm for an idle cpu. The instructions were to place heatsink on the cpu w/ cable closest to the fan connecter, than you had to turn these 4 connecters on the HS clockwise and push down into the mobo, if it wasnt clockwise it would not be securly connected to the cpu, causing bad cooling.
Does anyone know any good websites that have temps for cpu's?
Lamar225, did you find any resolve to your situation? Your problem was most likly due to bad cooling just like mine was, and if the cpu isnt damaged, which most likly is not because the mobo protects the cpu overheating by shuting down the system BEFORE it gets to a damaging temp.
electronicsfreak
Technical User
You can go to intel website and plug in the info on your cpu and thus find the operating temps.
In my post above i mentioned a few things that can be done.
First thing to do, of course, is to find out the operating temps for your cpu.
If you suspect any heat issues take the side off the pc and place a house fan to blow on the cpu. If that brings down your operating temp then you can also get a better fan for your cpu. You can go to places like newegg.com and frys.com, directron.com and also pricewatch.com. The first 3 you can email them with the info on your mobo\cup and they will reccommend a few fans for you to get that will allow you to run your cpu cooler.
The house fan is only a temporary solution as your whole case airflow can be interrupted by taking off the side of the case. Not that you have to worry about it, just that in the end you will have the side back on and temps will vary and you may have to adjust your case fannage and do other things i suggested above to get good results.
I have seen lots of case mods where they are putting fans on the very top on the premise that heat rises.
Good advice + great people = tek-tips
In my post above i mentioned a few things that can be done.
First thing to do, of course, is to find out the operating temps for your cpu.
If you suspect any heat issues take the side off the pc and place a house fan to blow on the cpu. If that brings down your operating temp then you can also get a better fan for your cpu. You can go to places like newegg.com and frys.com, directron.com and also pricewatch.com. The first 3 you can email them with the info on your mobo\cup and they will reccommend a few fans for you to get that will allow you to run your cpu cooler.
The house fan is only a temporary solution as your whole case airflow can be interrupted by taking off the side of the case. Not that you have to worry about it, just that in the end you will have the side back on and temps will vary and you may have to adjust your case fannage and do other things i suggested above to get good results.
I have seen lots of case mods where they are putting fans on the very top on the premise that heat rises.
Good advice + great people = tek-tips
- Thread starter
- #11
lamar225
Could you tell me wether you have properly checked the heatsink is fitted the correct way around, please look and don't just dismiss this suggestion as this is a most common mistake and is not at all obvious visually.
Yes the motherboard can shut down if an rpm signal is not detected on the CPU fan header, sometimes a faulty fan can cause this but usually this fault results in a much quicker than 20seconds shut down (normally 4/5 secs)
Martin
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Participate and help others.
Could you tell me wether you have properly checked the heatsink is fitted the correct way around, please look and don't just dismiss this suggestion as this is a most common mistake and is not at all obvious visually.
Yes the motherboard can shut down if an rpm signal is not detected on the CPU fan header, sometimes a faulty fan can cause this but usually this fault results in a much quicker than 20seconds shut down (normally 4/5 secs)
Martin
We like members to GIVE and not just TAKE.
Participate and help others.
Sorry, just switch amd for intel and the message stays the same.
Still, paparazi's question needs to be answered. Its the first thing to check, especially with an amd and the way some of them fit can be easily done wrong.
The points i made are only if the heatsink\fan are properly oriented.
Good advice + great people = tek-tips
Still, paparazi's question needs to be answered. Its the first thing to check, especially with an amd and the way some of them fit can be easily done wrong.
The points i made are only if the heatsink\fan are properly oriented.
Good advice + great people = tek-tips
lamar, what are the temperature reading for your hardware? (meaning cpu temp., mobo temp., case temp., video card.,) Maybe the problem is not even heat related. How old is the system itself, especially the hard drive? Did you build the pc or did someone professionally put everything together? If you build it, are you sure all the wiring is correct, sometimes i make huge errors in the wiring which can cause all different types of problems. Im just throwing out questions and suggestions that could lead to the rite direction. hope it helps.
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