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‎01-15-2018 10:37 AM

HP Recommended
Product: HP Pavilion p6-2406er
Operating System: Microsoft Windows 10 (64-bit)

Hello! I replaced the old case of my PC with a more spacious one. All internal components except the fans remained the same. When the PC starts up, the error "Error 512 - rear chassis fan not detected, Press F1 to continue" appears. When I press F1, the download continues in normal mode. The rear chassis fan that is connected to the motherboard rotates. I connected another 3-pin fan, the error remains.  When connecting the fan from the old case, no error occurs. In what there can be a problem, prompt please. I'm already tired of constantly poking on F1 at boot :Crying:

5 people had the same question
1 ACCEPTED SOLUTION

Accepted Solutions

‎01-15-2018 03:06 PM - edited ‎07-15-2019 03:04 PM

HP Recommended

@John-Konstantin,

Why do you not use the original case fan, if it corrects the problem?

The problem is related to the minimum fan speed.

You could run a test with CPIUD HWMonitor.  Just record the speeds, and change fans.

This usually happens when someone installs a low-speed QUIET fan.

This system is feedback driven thru Solution and Kudo flags. It's the only means of knowing if you have been served. Please click Accept as Solution, if your problem is solved. To say THANK YOU, press the "thumbs up symbol" to render a KUDO. You can render both Solution and KUDO..

HP Envy 8 5010 Tablet
(2) HP DV7t i7 3160QM 2.3Ghz 8GB
Printer -- HP OfficeJet Pro 8620 Legal
Custom Asus Z97D, I7-4790k, 16GB RAM, WIN10 Pro 64bit, ZOTAC GTX1080 AMP Extreme 3 fan 8GB RAM, 500GB SSD, Asus PB287 4k monitor, Rosewill Blackhawk case and 750W OCZ PSU.

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3 REPLIES 3

‎01-15-2018 03:06 PM - edited ‎07-15-2019 03:04 PM

HP Recommended

@John-Konstantin,

Why do you not use the original case fan, if it corrects the problem?

The problem is related to the minimum fan speed.

You could run a test with CPIUD HWMonitor.  Just record the speeds, and change fans.

This usually happens when someone installs a low-speed QUIET fan.

This system is feedback driven thru Solution and Kudo flags. It's the only means of knowing if you have been served. Please click Accept as Solution, if your problem is solved. To say THANK YOU, press the "thumbs up symbol" to render a KUDO. You can render both Solution and KUDO..

HP Envy 8 5010 Tablet
(2) HP DV7t i7 3160QM 2.3Ghz 8GB
Printer -- HP OfficeJet Pro 8620 Legal
Custom Asus Z97D, I7-4790k, 16GB RAM, WIN10 Pro 64bit, ZOTAC GTX1080 AMP Extreme 3 fan 8GB RAM, 500GB SSD, Asus PB287 4k monitor, Rosewill Blackhawk case and 750W OCZ PSU.
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‎01-16-2018 05:38 AM

HP Recommended

Thanks for the answer! I do not use an old fan, because its size is 80 mm, and it does not fit in my new case. The new case has a 120mm fan. Yes, it does rotate much slower than other fans.

Then another question: can I ignore this error through the BIOS setup? I just do not want to change the fan to a faster and loud fan. Thank you!

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‎01-16-2018 08:29 AM

HP Recommended

I solved the problem. Using the Speedfan  program, I manually increased the fan speed from 370 rpm to 1070 rpm. Now the error does not appear when turning on the PC. Many thanks for the right thought regarding the fan speed!

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