HP Media Center M376N CPU Fan

[mrmyth]

I have an HP Media Center M376N

It is running Windows XP. On bootup before it loads the operating system it says the CPU fan is not working and it gives me 5 seconds to hit  F2 in order to continue.

I replaced the System Fan because it was not working. Now I'm still getting the error message. I see no other fan in the computer.

In the BIOS

There is the main "System Fan" and it says that it is running at 1966rpm or thereabouts and the BIOS also lists a CPU Fan but that shows a red number 0rpm

I don't see any other fan in the computer. The main fan goes right into this vent that encloses the big silver grill looking part (I don't know what that's called) that is on the motherboard.

 The BIOS then said that the processor was at 105 degrees which seems normal. I checked around on the internet and I saw that 40C is a pretty low temperature for a processor and it's a hot day here.
 Is there another fan in there that I'm missing?

[TheOldMan]

"the BIOS also lists a CPU Fan but that shows a red number 0rpm"  That is the fan on the CPU cooler.  It should be running no matter what.  When the computer case is opened, it should be a prominent and obvious cooler facing toward you.  Once the case side is removed, try starting the computer again to observe that fan.

[ris49]

I have the same unit and the comment about the fan facing you on the CPU is incorrect according to mine. It is a single fan on the back of the  computer which uses a plastic air duct to pull the air over the heat sink on the processor. I had the same error message and it would shut down after 5 seconds. I hit the F1 key doing startup and it went ahead and started. After that I shut it down and it starts fine now and runs. I believe the processor got a glitch that prevented it from reconizing the fan. This happened after a  3 second power outage.