HP Z8 G4 Rear and both memory fans noisy

[Abramelin01]

Hi,

I have the problem that my Z8 G4 Workstation speeds up the 3 fans if i start 3dmark and dont throttle it down if i quit the program.

I have changed the cpu´s , the graphics card , ram, fans and powersupply.

nothing helps.

I have 3 other Z8 G4 Wks that don´t do this problem.

Anyone who has some experience with this prolem???

best regards 

Abramelin

ps:

Sorry for my bad english.

[erico]

CPU Mark makes the desktop work hard and would take a while for the cool down to the Delta T trigger point in the BIOS coding.

Have you waited a while to see if the fan spools down or does the fan just stay spooled up until you turn off the PC?

[Abramelin01]

Hi,

thanks for your reply.

I wait 30 Minutes but the three fans won´t slow down.

these 3 fans speed up if i start the program 3dmark , i´m not running any benchmarks!!!

only program start!

if i reboot the system then the fans in are normal silent working.

my other 3 z8 g4´s don´t do this.

i hope it´s not a mainboard failure .

[erico]

"if i reboot the system then the fans in are normal silent working." That is normal.

Somehow that program is triggering a glitch in your laptop's firmware.

Now that you know that it happens, why use that utility?

I would reinstall the chipset software, The Intel IME software and the BIOS.

[Abramelin01 · Accepted solution]

Hi,

I found the error!

i had reset  the bios to factory defaults and now it works without any loudy fans.

some solutions are so simple !

many thanks for thinking of my problem!

thanks!!!