Create an account on the HP Community to personalize your profile and ask a question
10-11-2022 02:48 PM
had a cpu fan error for yrs, usually hit f2 to bypass. microsoft update seemed to have changed some settings and or restarted my pc. had some usb port trouble on restart but fixed it.
currently, i no longer have the f2 to bypass option. on restart theres a blue hp screen i hit esc to boot and within 5 seconds the cpu fan error comes on and shutdown my pc. i tried a different fan last month and it worked. now, no fans work. i bought a new fan, same error.
i need a workaround to get to bios, force windows, bypass the cpu fan error, repair the motherboard sensor manually. replace the bios chip (if theres only one), or a tech store said replace the bios firmware? im not sure how to do that without being able to reach the bios. also can i usb port an update or something before the fan error hits?
ive spent a week trying to figure this out.
HP truckee motherboard. american megatrends bios.
10-11-2022 06:46 PM - edited 10-11-2022 06:51 PM
This is an older system and has a number of electrolytic capacitors that are prone to leaking. I have several of the 1366 socket type motherboards and have had to replace bad caps.
There is a parts list for your system here
The 4 pin CPU fan goes into the white 4 pin fan header
The 3 pin is for the exhaust fan not the CPU
AFAICT there are only 2 fans.
Please verify your motherboard is Pegatron IPMTB-TK
HP part number 594415-001
Do not update the bios if the system is having problems.
Look at all the brown and black capacitors for bulging (splitting at top) or leaking
replace any bad caps before considering bios change.
The only reason to replace the bios is to allow Xeon lower power CPU in place of the I7 Pentiums. That might not even possible as HP documentation and drivers have been withdrawn.
Go over the motherboard with an air duster.
I am a retired Principal Analyst, and a community volunteer.
If you found the answer helpful and/or you want to say “thanks”? Click the “ Yes ” box below Did I help solve the problem? don´t forget to click “ Accept as a solution” , someone who has the same query may find this solution and be helped by it.
Didn't find what you were looking for? Ask the community