Mark Lewis
12-29-2003, 04:40 PM
I am having an overheating issue with a no-name box I got from CompUSA. The
problem is that the machine will often crash on boot with a CPU Overheating
message when the machine has been off for some time and the room temperature
is in the low 60's F (about 16C). When the machine does finally boot up,
usually if I restart and wait at the error screen for a bit and then use F4
to continue the boot process the system will start. Once the room
temperature is around 65F/18C or higher the machine has no trouble.
When the system does boot the Intel Active Monitoring software shows the
same temperature as the BIOS Hardware screen. This ranges between 84-90F
(29-32C) up to about 100F (38C) at 50% CPU in XP Pro.
This started to happen after I replaced the stock noisy Intel "Stack Fan"
with a Zalman flower fan (a Zalman CNPS7000A-AlCu). The Zalman is very
quiet, even at full power without use the FanMate controller, and reduced
the temperatures from the stock fan around 10 degrees F (6C). Unfortunately,
the system also sometimes shuts down with a temp failure at what looks like
a low temperature in the monitoring software. This happens when the graphics
cards is stressed and the system temp shows about 110F (43C). This is much
lower than it should be and the heatsink is very cool to the touch.
I suspect I have damaged the CPU's temperature diode but find this all very
strange. If I have damaged that I assume I will need to replace the
processor.
The system does have one output fan in the side of the case and two input
fans that all seem to be working fine. I have tried carefully cleaning the
CPU and fan/heatsink and reapplying the thermal paste as well as returning
to the original fan.
Any thoughts?
Thanks,
Mark Lewis
mdlewis@mdlewis.com
problem is that the machine will often crash on boot with a CPU Overheating
message when the machine has been off for some time and the room temperature
is in the low 60's F (about 16C). When the machine does finally boot up,
usually if I restart and wait at the error screen for a bit and then use F4
to continue the boot process the system will start. Once the room
temperature is around 65F/18C or higher the machine has no trouble.
When the system does boot the Intel Active Monitoring software shows the
same temperature as the BIOS Hardware screen. This ranges between 84-90F
(29-32C) up to about 100F (38C) at 50% CPU in XP Pro.
This started to happen after I replaced the stock noisy Intel "Stack Fan"
with a Zalman flower fan (a Zalman CNPS7000A-AlCu). The Zalman is very
quiet, even at full power without use the FanMate controller, and reduced
the temperatures from the stock fan around 10 degrees F (6C). Unfortunately,
the system also sometimes shuts down with a temp failure at what looks like
a low temperature in the monitoring software. This happens when the graphics
cards is stressed and the system temp shows about 110F (43C). This is much
lower than it should be and the heatsink is very cool to the touch.
I suspect I have damaged the CPU's temperature diode but find this all very
strange. If I have damaged that I assume I will need to replace the
processor.
The system does have one output fan in the side of the case and two input
fans that all seem to be working fine. I have tried carefully cleaning the
CPU and fan/heatsink and reapplying the thermal paste as well as returning
to the original fan.
Any thoughts?
Thanks,
Mark Lewis
mdlewis@mdlewis.com