help! over temperature error / alert
in [Asus]
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From: zark on 5 Jan 2006 19:19 hello- i am using the p5gd2 premium mb with intel p4 3.2 cpu. in the past week i have been getting "cpu over temperature" followed by "press f1 to contimue" this occurs on boot up, and i press f1 and it continues into windows- the computer works fine, i did benchmarking tests and the system runs as designed. i reattached the cpu cooler (thermaltake heat pipe cooler). all the fans are running. i have placed a temperature probe against the side of the cpu chip-its temperature varies between 34-45 degrees C-whereas the asus temperature on board sensor indicates that it is 124 degrees C!!!!!!!!! before getting this error message i had been putting my computer in hibernation mode-though i dont think this lead to the temperature error. i also went into bios setup-didnt see anything out of the usual. any advice? is the over temperature error false considering the other temperature sensor readings? what to do? ignore it? would the computer shut down/SLOW way down if it really were too hot?
From: Paul on 5 Jan 2006 20:47 In article <1136506795.112213.104520(a)g47g2000cwa.googlegroups.com>, "zark" <etc1760(a)yahoo.com> wrote: > hello- > i am using the p5gd2 premium mb with intel p4 3.2 cpu. > > in the past week i have been getting "cpu over temperature" followed by > "press f1 to contimue" > > this occurs on boot up, and i press f1 and it continues into windows- > the computer works fine, i did benchmarking tests and the system runs > as designed. i reattached the cpu cooler (thermaltake heat pipe > cooler). all the fans are running. i have placed a temperature probe > against the side of the cpu chip-its temperature varies between 34-45 > degrees C-whereas the asus temperature on board sensor indicates that > it is 124 degrees C!!!!!!!!! > > before getting this error message i had been putting my computer in > hibernation mode-though i dont think this lead to the temperature > error. > > i also went into bios setup-didnt see anything out of the usual. > > any advice? is the over temperature error false considering the other > temperature sensor readings? what to do? ignore it? would the computer > shut down/SLOW way down if it really were too hot? Would that be 124 degrees F perhaps ? Intel processors have thermal throttling at 70C die temperature. This slows the effective clock rate of the processor, until the processor temperature drops below 70C. People who experience that their CPU "only rises to 69-70C" are in fact throttling and don't know it. I think there is a program called Throttlewatch that can tell you when that happens. On the newest Intel processors, if throttling does not control the CPU temperature (say the heatsink fell off), the CPU also has overheat protection that shuts the computer off at 90C. (I think the docs say 20C more than the throttle temp.) Some older processors have the trip point set at 135C, but you aren't likely to be using one of those. In other words, if the processor was purchased recently, and if the silicon die was at 124C, the computer has already shut off. 124F = 51C Paul
From: Ian Boys on 6 Jan 2006 04:11 > before getting this error message i had been putting my computer in > hibernation mode-though i dont think this lead to the temperature > error. I've had the same thing coming out of standby on my ECS PF21 motherboard. Motherboard Monitor says the CPU fan is off, although it's not, and the temp alarm comes on. Restart fixes all this but it means I don't trust standby anymore. Ian Boys DTE
From: zark on 6 Jan 2006 11:34 Paul wrote: > In article <1136506795.112213.104520(a)g47g2000cwa.googlegroups.com>, "zark" > <etc1760(a)yahoo.com> wrote: > > > hello- > > i am using the p5gd2 premium mb with intel p4 3.2 cpu. > > > > in the past week i have been getting "cpu over temperature" followed by > > "press f1 to contimue" > > > > this occurs on boot up, and i press f1 and it continues into windows- > > the computer works fine, i did benchmarking tests and the system runs > > as designed. i reattached the cpu cooler (thermaltake heat pipe > > cooler). all the fans are running. i have placed a temperature probe > > against the side of the cpu chip-its temperature varies between 34-45 > > degrees C-whereas the asus temperature on board sensor indicates that > > it is 124 degrees C!!!!!!!!! > > > > before getting this error message i had been putting my computer in > > hibernation mode-though i dont think this lead to the temperature > > error. > > > > i also went into bios setup-didnt see anything out of the usual. > > > > any advice? is the over temperature error false considering the other > > temperature sensor readings? what to do? ignore it? would the computer > > shut down/SLOW way down if it really were too hot? > > Would that be 124 degrees F perhaps ? > > Intel processors have thermal throttling at 70C die temperature. > This slows the effective clock rate of the processor, until > the processor temperature drops below 70C. People who experience > that their CPU "only rises to 69-70C" are in fact throttling > and don't know it. I think there is a program called Throttlewatch > that can tell you when that happens. > > On the newest Intel processors, if throttling does not control > the CPU temperature (say the heatsink fell off), the CPU also > has overheat protection that shuts the computer off at 90C. > (I think the docs say 20C more than the throttle temp.) Some > older processors have the trip point set at 135C, but you > aren't likely to be using one of those. > > In other words, if the processor was purchased recently, > and if the silicon die was at 124C, the computer has > already shut off. > > 124F = 51C > > Paul according to the program "asus probe" the temperature of the cpu is 124C which is OVER 250 F !!!!!!!!! i reattached the cpu cooler a second time, reapplying silver conductive grease. there is NO throttling or shut down- i ran an arithmetic benchmarking test with SANDRA from sisoftware and it came out just fine. is there any way to reset the temperature sensor? do a diagnostic on it? the external cpu temp sensor is now reading 40C. should i just ignore the over temp alert? wouldnt you expect to be smelling smoke/ hearing alarms/ dead computer if the cpu was really at 250 F???
From: Paul on 7 Jan 2006 05:23
In article <1136565265.640493.7350(a)g44g2000cwa.googlegroups.com>, "zark" <etc1760(a)yahoo.com> wrote: > Paul wrote: > > In article <1136506795.112213.104520(a)g47g2000cwa.googlegroups.com>, "zark" > > <etc1760(a)yahoo.com> wrote: > > > > > hello- > > > i am using the p5gd2 premium mb with intel p4 3.2 cpu. > > > > > > in the past week i have been getting "cpu over temperature" followed by > > > "press f1 to contimue" > > > > > > this occurs on boot up, and i press f1 and it continues into windows- > > > the computer works fine, i did benchmarking tests and the system runs > > > as designed. i reattached the cpu cooler (thermaltake heat pipe > > > cooler). all the fans are running. i have placed a temperature probe > > > against the side of the cpu chip-its temperature varies between 34-45 > > > degrees C-whereas the asus temperature on board sensor indicates that > > > it is 124 degrees C!!!!!!!!! > > > > > > before getting this error message i had been putting my computer in > > > hibernation mode-though i dont think this lead to the temperature > > > error. > > > > > > i also went into bios setup-didnt see anything out of the usual. > > > > > > any advice? is the over temperature error false considering the other > > > temperature sensor readings? what to do? ignore it? would the computer > > > shut down/SLOW way down if it really were too hot? > > > > Would that be 124 degrees F perhaps ? > > > > Intel processors have thermal throttling at 70C die temperature. > > This slows the effective clock rate of the processor, until > > the processor temperature drops below 70C. People who experience > > that their CPU "only rises to 69-70C" are in fact throttling > > and don't know it. I think there is a program called Throttlewatch > > that can tell you when that happens. > > > > On the newest Intel processors, if throttling does not control > > the CPU temperature (say the heatsink fell off), the CPU also > > has overheat protection that shuts the computer off at 90C. > > (I think the docs say 20C more than the throttle temp.) Some > > older processors have the trip point set at 135C, but you > > aren't likely to be using one of those. > > > > In other words, if the processor was purchased recently, > > and if the silicon die was at 124C, the computer has > > already shut off. > > > > 124F = 51C > > > > Paul > > according to the program "asus probe" the temperature of the cpu is > 124C which is OVER 250 F !!!!!!!!! i reattached the cpu cooler a second > time, reapplying silver conductive grease. there is NO throttling or > shut down- i ran an arithmetic benchmarking test with SANDRA from > sisoftware and it came out just fine. > > is there any way to reset the temperature sensor? do a diagnostic on > it? the external cpu temp sensor is now reading 40C. > > should i just ignore the over temp alert? wouldnt you expect to be > smelling smoke/ hearing alarms/ dead computer if the cpu was really at > 250 F??? The CPU temperature is measured by using a diode inside the CPU die. The monitor chip measures the voltage across the diode, and then a conversion formula is used to convert the voltage reading into a temperature. (Asus boards have used a thermistor in the socket area in the past, and I don't know of a simple way to prove which method is used on a given board. The diode method saves Asus a few pennies, so it would be a preferred method.) If the two pins on the CPU package, that connect the diode to the board, are not making good contact, that could account for some bad readings. If the monitor chip is not set up properly (set in the wrong mode) then I suppose that could mess things up. PDF page 31 shows how the Winbond W83627EHF chip measures CPU die temp: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83627EHF_EHG.pdf In that diagram, if the diode doesn't make good contact with the circuit, the voltage at the monitor pin climbs to Vref, and that should yield a high temperature reading from the conversion formula. Conversely, if the diode fails shorted, the measured temperature will be very low. If Speedfan (http://www.almico.com/sfdownload.php) is able to get good temperature readings from your board, then that means the BIOS is immature. Consider doing a BIOS upgrade, if Speedfan seems to be working properly. If Speedfan also reports a bad value, then replacing the motherboard or the CPU might be the only solution. If the motherboard socket was dirty, I suppose that could do it. You cannot touch the contacts in the LGA775 socket, or touch the contacts on the bottom of your processor, without contaminating them. What would be especially bad, is getting thermal grease in the socket. (I have never read of an approved cleaning method for the socket, so don't even think about spraying solvents in there! For an end user, reinsertion of the component, to allow the contacts to scrape a clean connection, is the safest alternative.) Good luck, Paul |