Athlon 64 3800+ just started overheating on an ASUS A8V

Hi All,
my nephew has an Athlon 64 3800+ on an asus a8v board and it has just started over heating for no apparent reason. It is not overclocked atall. It was working fine up until last night and just suddenly shutdown because of overheating. He called me round today, I was expecting the fan to have seized but thats fine, I reseated the hsf with some fresh decent paste and watched the temp go up in the hardware monitoring section of the bios. was up to 60 C within a minute.

Any ideas?

 

CPU could be bad or just a bad sensor. Try it in another motherboard if you can.

 

sounds silly but the heatsink it might just be cloged of with dust
good luck

 

Sorry its been a week or so, I have just been to my nephews and ended up bringing it back with me. The hsf was well seated and firm, there is no dust in it. I am going to try the cpu in my board, I am a bit relectant to try my FX-55 cpu in his board incase it balls that up, I'll keep you informed.

Thanks for taking an interest.

 

try using arctic silver 5 instead of regular thermal paste; has better heat conductivity to from the cpu to the heatsink. use isopropyl alcohol to remove the old paste from the heatsink and cpu, and then apply a BB size drop smack dab in the middle of the cpu. reseat the heatsink into place and check the temps.

if you're still getting high temps, it might be best to get a new heatsink.

 

I'm writing this with the cpu and hsf in my pc, its been running now for about 2 hours without a prob. The cpu and hsf combo have been used for a while without problems. It must be the Asus A8V Deluxe board. Is there anyway of resetting/messing with the thermal sensor for the cpu on this board?

 

Try your CPU in the board and see if it says that it's overheating. It could be a bad sensor.

 

Hi again,
my guess is that it is a bad sensor. The cpu was fine in my board. I have flashed the bios to a previous release, but that didnt sort it. I have 'worked' the lever on the socket with the cpu in place and that seems to have cured it. Possibly a bad contact between the pins and the sensor. I did some cpu intensive work and checked the temp. it peaked at 55c, which is not cool, but not that hot. Before it was just counting up to 75c just on the bios screen and then switching off. Anyway, I have disabled the temp monitor on the bios, if it fries the cpu its no big deal anyway, they are very cheap now, plus 939 boards are dearer on ebay than a new AM2 board from my local retailer, better to replace both.

Thanks to everyone who took an interest.