CPU overheating
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
|||||||||||||||||||||||||
|
Posted by Malcolm on September 12, 2006, 9:55 am
Please log in for more thread options 3200+,bus 2200Mhz, 1024kb ram, 204Gb Maxtor HD and NEC RW ND3540A DVD. Motherboard is ASRock K8 upgrade VM800. Bios is American Megatrends P1.20 11 March 2005. I loaded Itunes just after I bought it and over a period, loaded CDs on to it usually 6 or 8 one after the other without a problem. A few weeks ago, after loading about 3 Cds in succession the PC shut down. After leaving it for half an hour I could continue.This condition continued for a couple of weeks but now I cannot load one CD without it shutting down. In normal use (surfing etc) it is fine. I loaded PC Wizard and checked the CPU temperature. Under normal use it reports a CPU temperature of about 45C but when I start to load a CD it immediately rises at the rate of about 3 to 4 degrees C per minute so in a few minutes it hits about 80C at which point it shuts down. I opened it up and found that the two case fans were both pushing air in so I reversed the rear one so it sucked air out but it has made little difference. The CPU fan is reported by PC wizard to be running at 3013rpm and when I feel the heat sink it only feels warm not hot. I suspected it was not making good contact to the CPU so I removed it but I can't see anything wrong. It has a thin film of heatsink compound and the clip is holding it very tightly to the CPU. The inside is all very clean . There is no dirt or debris on the heatsink fins. For further information I tried getting it to calculate a large factorial and it overheats in exactly the same way as it does loading CDs. When I opened up my work PC for comparison I was surprised how hot the heatsink is. Certainly too hot to keep fingers on it so I went back to my home PC convinced the heatsink is not contacting the CPU properly , I took it off again and pushed it back on. It adheres quite well without the clip so it is definitely not that. I am finding it hard to think of an explanation that explains this degeneration over a period I would appreciate any suggestions. | |||||||||||||||||||||||||
|
Posted by kony on September 12, 2006, 6:40 pm
Please log in for more thread options Ideally you would use software meant for your motherboard, as 3rd party software can potentially read the wrong value or report it wrong. Even so, if we were to take for granted that it's overheating the next idea is to pull case cover off and point a fan at it (temporarily) to remove the chassis cooling from the equation... then retry same things with the computer but itunes would take a long time, try a stress test like Prime95's Torture test, it'll heat it up in seconds, minutes at most. >I opened it up and found that the two case fans were both pushing air
>in ?? Which fans, where, who built it or what case is this if it came that way? From what you write below it may not matter but if even this basic part of the system is set up wrong, it bodes ill for the rest of it. >so I reversed the rear one so it sucked air out but it has made
>little difference. The CPU fan is reported by PC wizard to be running >at 3013rpm and when I feel the heat sink it only feels warm not hot. What heat sink? Someone might know the make and model, but a link to a good picture online might be useful. >I
>suspected it was not making good contact to the CPU so I removed it but >I can't see anything wrong. It has a thin film of heatsink compound and >the clip is holding it very tightly to the CPU. Is it possible the installer didn't take off a thin plastic protector before installing the 'sink? If you have some heatsink compound, I'd clean off the CPU and 'sink and apply a fresh, _very_ thin coat of compound. Of course you should never turn system on without the heatsink- to most people this is obvious but sometimes not, so I mention it anyway. >The inside is all very
>clean . There is no dirt or debris on the heatsink fins. >For further information I tried getting it to calculate a large >factorial and it overheats in exactly the same way as it does loading >CDs. >When I opened up my work PC for comparison I was surprised how hot the >heatsink is. Certainly too hot to keep fingers on it so I went back to >my home PC convinced the heatsink is not contacting the CPU properly , >I took it off again and pushed it back on. It adheres quite well >without the clip so it is definitely not that. >I am finding it hard to think of an explanation that explains this >degeneration over a period I'd take it off and examine it again- something not right if the CPU is getting overly hot, the 'sink seeming to make good contact but not getting hot. | |||||||||||||||||||||||||
|
Posted by on September 12, 2006, 6:43 pm
Please log in for more thread options Malcolm wrote:
> I bought my PC about a year ago . It contains an AMD Athlon 64
> 3200+,bus 2200Mhz, 1024kb ram, 204Gb Maxtor HD and NEC RW ND3540A DVD. > Motherboard is ASRock K8 upgrade VM800. > Bios is American Megatrends P1.20 11 March 2005. > > I loaded Itunes just after I bought it and over a period, loaded CDs on > to it usually 6 or 8 one after the other without a problem. A few weeks > ago, after loading about 3 Cds in succession the PC shut down. After > leaving it for half an hour I could continue.This condition continued > for a couple of weeks but now I cannot load one CD without it shutting > down. In normal use (surfing etc) it is fine. > > I loaded PC Wizard and checked the CPU temperature. Under normal use it > reports a CPU temperature of about 45C but when I start to load a CD it > immediately rises at the rate of about 3 to 4 degrees C per minute so > in a few minutes it hits about 80C at which point it shuts down. > I opened it up and found that the two case fans were both pushing air > in so I reversed the rear one so it sucked air out but it has made > little difference. The CPU fan is reported by PC wizard to be running > at 3013rpm and when I feel the heat sink it only feels warm not hot. I > suspected it was not making good contact to the CPU so I removed it but > I can't see anything wrong. It has a thin film of heatsink compound and > the clip is holding it very tightly to the CPU. The inside is all very > clean . There is no dirt or debris on the heatsink fins. > For further information I tried getting it to calculate a large > factorial and it overheats in exactly the same way as it does loading > CDs. > When I opened up my work PC for comparison I was surprised how hot the > heatsink is. Certainly too hot to keep fingers on it so I went back to > my home PC convinced the heatsink is not contacting the CPU properly , > I took it off again and pushed it back on. It adheres quite well > without the clip so it is definitely not that. > I am finding it hard to think of an explanation that explains this > degeneration over a period > > I would appreciate any suggestions. possibilities: the heatsink is warped, so not making decent thermal contact. the temp monitoring is faulty. Touching the cpu itself, not the HS, shoudl tell you. If it bites its too hot. If its frying hot but the heatsink cool, poor thermal connection is inevitable. NT | |||||||||||||||||||||||||
|
Posted by Malcolm on September 13, 2006, 4:34 am
Please log in for more thread options
> possibilities:
> > the heatsink is warped, so not making decent thermal contact. > the temp monitoring is faulty. > > Touching the cpu itself, not the HS, shoudl tell you. If it bites its > too hot. If its frying hot but the heatsink cool, poor thermal > connection is inevitable. > > > NT The heatsink is much bigger than the CPU so I can't actually get a finger underneath to touch the CPU. Judging by the very even film of HS compound on the heatsink I would say it is not warped but I will get some more compound and clean off the old and re-apply. How can I tell if the temp monitoring is faulty? M. | |||||||||||||||||||||||||
|
Posted by darklight on September 13, 2006, 7:19 am
Please log in for more thread options Malcolm wrote:
> I opened it up and found that the two case fans were both pushing air
> in so I reversed the rear one so it sucked air out but it has made > little difference. If both case fans are the same i would have both of them extracting. I had this same problem. Solution i took the 80mm case fan off the side panel and increased the hole so it could take a 120mm fan extracting. And removed the rear case fan put the panel back on now there is nice air flow through pc air is sucked in at rear and expelled through the side. | |||||||||||||||||||||||||
| Similar Threads | Posted |
| CPU Overheating | July 5, 2005, 9:57 pm |
| Overheating? | July 18, 2005, 11:10 am |
| Overheating CPU | October 7, 2005, 10:06 pm |
| CPU overheating | September 12, 2006, 9:55 am |
| Laptop Overheating | July 12, 2005, 5:35 pm |
| CPU overheating for no reason | September 13, 2005, 3:00 am |
| Restart after overheating | February 6, 2006, 6:31 am |
| Overheating message | October 2, 2006, 9:01 am |
| Need advice on overheating | May 7, 2008, 9:07 am |
| northbridge overheating | July 20, 2008, 9:48 am |
| CPU started overheating for no reason. | September 9, 2005, 8:23 am |
| CPU started overheating for no reason | September 13, 2005, 3:00 am |
| CPU overheating "Shutdown feature" | April 28, 2006, 4:35 pm |
| Overheating - Advice Needed | June 8, 2006, 12:59 pm |
| computer overheating question | July 17, 2006, 6:10 pm |
>3200+,bus 2200Mhz, 1024kb ram, 204Gb Maxtor HD and NEC RW ND3540A DVD.
>Motherboard is ASRock K8 upgrade VM800.
>Bios is American Megatrends P1.20 11 March 2005.
>
>I loaded Itunes just after I bought it and over a period, loaded CDs on
>to it usually 6 or 8 one after the other without a problem. A few weeks
>ago, after loading about 3 Cds in succession the PC shut down. After
>leaving it for half an hour I could continue.This condition continued
>for a couple of weeks but now I cannot load one CD without it shutting
>down. In normal use (surfing etc) it is fine.
>
>I loaded PC Wizard and checked the CPU temperature. Under normal use it
>reports a CPU temperature of about 45C but when I start to load a CD it
>immediately rises at the rate of about 3 to 4 degrees C per minute so
>in a few minutes it hits about 80C at which point it shuts down.