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Question posted by ellisonosman on January 27th, 2013

Why Won't The Fans Turn Off?

Installed an ASUS P8B75-M motherboard. When turning off, windows closes, screen goes black but all the cooling fans remain operative. Clean istall of windows 7 64 bit and asus drivers. BIOS set to "default". Any clues!?

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Answer #1: Posted by tintinb on January 27th, 2013 10:53 PM

This answer was accepted by the poster of the original question.

tintinb

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The best solution for this problem is to remove all the portable devices inserted into the USB ports of your computer. I believe that there is a rechargeable portable device that is inserted in the USB port of your computer. I personally experienced this problem. I have a portable rechargeable speaker which is always inserted to the USB port of my computer. However, even if I turned off the computer completely, the keyboard lights and fans are still working. This is due to the battery charge of the portable device.

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Tintin

Answer #2: Posted by cljeffrey on January 29th, 2013 5:03 PM

cljeffrey

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Here is a link below where you can update the bios. That should resolve your issue. If not then you will have to go in the bios and check the settings on the fan or temperature.

http://www.asus.com/Motherboard/P8B75M/#support_Download

Related Asus P8B75-M Manual Pages

P8B75-M User's Manual - Page 9

... (continued on the next page) ix ASUS USB 3.0 Boost - ASUS CrashFree BIOS 3 - GPU Boost - ASUS Anti-Surge Protection - ASUS UEFI BIOS featuring graphics user interface ASUS Quiet Thermal Solution: - ASUS Q-Fan 2 - Network iControl featuring instant network bandwidth domination for top network program in use - ASUS EPU - ASUS MyLogo 2™ 1 x PS/2 keyboard port (purple...

P8B75-M User's Manual - Page 10

... v2.0a, SM BIOS v2.5, Multi-language BIOS, ASUS CrashFree BIOS 3, ASUS EZ Flash 2, F12 PrintScreen function, F3 Shortcut function, and ASUS DRAM SPD (Serial Presence Detect) memory information WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE 1 x Serial ATA 3.0Gb/s cable 1 x Serial ATA 6.0Gb/s cable 1 x I/O shield 1 x User Manual 1 x Support DVD Drivers ASUS utilities ASUS Update Anti-virus software...

P8B75-M User's Manual - Page 13

...that goes ...BIOS snapshot hotkey for complete insight. Chapter 1: Product introduction 1-3 New F3 Shortcut for most accessed information - ASUS DRAM SPD (Serial Presence Detect) information for every use is significantly increased, adding to avoid network clogging and long-waits on /off button, the software currently in use . GPU Boost Go to run in 64-bit operating systems. ASUS...

P8B75-M User's Manual - Page 14

... bundled support DVD or USB flash disk that allows you to restore a corrupted BIOS file using an OS-based utility. 1-4 ASUS P8B75-M This remarkable memory rescue tool requires a mere push of the button to ensure quiet, cool and efficient operation. determines failsafe settings and dramatically improves your system up and running in -one simple to use...

P8B75-M User's Manual - Page 23

... address limitation on 32-bit Windows® OS, when you install 4GB or more on the motherboard. • This motherboard does not support DIMMs made up of the following: - DDR3 modules are using a 32-bit Windows® OS. - Install a 64-bit Windows® OS when you do any of 512Mb (64MB) chips or less. • The default memory operation frequency is dependent on...

P8B75-M User's Manual - Page 29

... completely seated on the system and change the necessary BIOS settings, if any. Align the card connector with it by adjusting the software settings. 1. 1.8 Expansion slots In the future, you may cause you physical injury and damage motherboard components. 1.8.1 Installing an expansion card To install an expansion card: 1. The following sub‑sections describe the slots...

P8B75-M User's Manual - Page 43

... BIN folder. Click Drivers, Utilities, Manual, Contact, and Specials tabs to your computer, the DVD automatically displays the Specials screen. If Autorun is for updates. Refer to display their respective menus. To run the DVD. 1.13 Software support 1.13.1 Installing an operating system This motherboard supports Windows® XP / 64-bit XP / 7 / 64-bit 7 Operating Systems (OS...

P8B75-M User's Manual - Page 45

...Windows® desktop, click Start > Programs > ASUS > AI Suite II > AI Suite II X.XX.XX to complete the installation. Select Update BIOS from the popup menu. Copy the original motherboard BIOS.... b. c. Updating the BIOS To update the BIOS: 1. The ASUS Update main screen appears. From the FTP site, select the BIOS version that comes with the motherboard package. Click Update button ...

P8B75-M User's Manual - Page 47

... using the motherboard support DVD or a USB flash drive that contains the latest BIOS, and then press . 5. The utility automatically checks the devices for the BIOS file. To ensure system compatibility and stability, we recommend that contains the BIOS file to perform the BIOS update process. Chapter 2: BIOS information 2-3 Press to switch to load default BIOS values. Press...

P8B75-M User's Manual - Page 48

Before updating BIOS 1. Prepare the motherboard support DVD and a USB flash drive in DOS environment 1. Insert the USB flash drive with the latest BIOS file and BIOS Updater to boot using defaults 3. C:\>d: D:\> 2-4 ASUS P8B75-M Boot your computer. Insert the support DVD into the optical drive and select the optical drive as shown. Please select boot device: SATA: ...

P8B75-M User's Manual - Page 50

... changing any BIOS setting, try to clear the CMOS and reset the motherboard to enter BIOS Setup using the BIOS Setup program. Do this motherboard. • Ensure that a USB mouse is connected to your motherboard if you in the EZ Mode/Advanced Mode screen. 2-6 ASUS P8B75-M You can cause damage to your data or system. Select the Load Optimized Defaults item...

P8B75-M User's Manual - Page 51

..., system performance mode and boot device priority. Chapter 2: BIOS information 2-7 EZ Mode By default, the EZ Mode screen appears when you to the Setup Mode item in s��e�c�t�i�o�n� 2.7 Boot menu for the advanced BIOS settings. EZ Mode Friday [10/08/2010] P8B75-M BIOS Version : 0303 Build Date : 02/16/2012...

P8B75-M User's Manual - Page 52

...ASUS P8B75-M For example, selecting Main shows the Main menu items. The other items (Ai Tweaker, Advanced, Monitor, Boot, Tool, and Exit) on any menu screen means that menu. Press or use the USB mouse to click this button to return to configure the BIOS settings... Values F3: Shortcut F5: Optimized Defaults F10: Save ESC: Exit F12: Print Screen Version 2.10.1208. The figure below...

P8B75-M User's Manual - Page 56

UEFI BIOS Utility - Configuration options: [Auto] [DDR3800MHz] [DDR3-1066MHz] [DDR3-1333MHz] [DDR3-1600MHz] [DDR3-1866MHz] [DDR32133MHz] [DDR3-2400MHz] Selecting a very high memory frequency may cause the system to the default setting. 2-12 ASUS P8B75-M F1: General Help F2: Previous Values F3: Shortcut F5: Optimized Defaults F10: Save ESC: Exit F12: Print Screen Version 2.10.1208. If ...

P8B75-M User's Manual - Page 59

... Advanced menu items allow you to change the settings for better system performance. UEFI BIOS Utility - F1: General Help F2: Previous Values F3: Shortcut F5: Optimized Defaults F10: Save ESC: Exit F12: Print Screen Version 2.10.1208. Higher load-line calibration ...Configuration options: [Auto] [Enabled] [Disabled] The actual performance boost may need better cooling system to CPU loading.

P8B75-M User's Manual - Page 66

...Defaults F10: Save ESC: Exit F12: Print Screen Version 2.10.1208. Copyright (C) 2012 American Megatrends, Inc. Copyright (C) 2012 American Megatrends, Inc. 2-22 ASUS P8B75-M Configuration options: [Disable Link] [Enabled] Ipv6 PXE Support [Enabled] This item appears only when you set...item appears only when you to change the fan settings. Advanced Mode Exit Main Ai Tweaker Advanced ...

P8B75-M User's Manual - Page 67

... 75ºC. The values range from 20ºC to achieve maximum CPU fan speed. Chapter 2: BIOS information 2-23 Select Ignore if you to set the appropriate performance level of the CPU temperature. If the fan is under 40ºC, the CPU fan will operate at the minimum duty cycle. The values range from 20ºC to...

P8B75-M User's Manual - Page 68

...] [Enabled] 2-24 ASUS P8B75-M The following four items appear only when you to 100%. Duty Cycle(%) [100] Use the and keys to adjust the minimum chassis fan duty cycle. Chassis Lower Temperature [40] Displays the lower limit of the CPU temperature. The values range from 60% to disable or set the chassis fan warning speed...

P8B75-M User's Manual - Page 69

... [Enabled] When this item to [Enabled] to use the ASUS MyLogo 2™ feature. F1: General Help F2: Previous Values F3: Shortcut F5: Optimized Defaults F10: Save ESC: Exit F12: Print Screen Version 2.10.1208. 2.7 Boot menu The Boot menu items allow you to set the waiting time for the F1 key to be pressed...

P8B75-M User's Manual - Page 71

... 2 Utility Allows you to store or load multiple BIOS settings. Profile This item allows you to run ASUS EZ Flash 2. Configuration options: [DIMM_A1] [DIMM_A2] [DIMM_B1] [DIMM_B2] Chapter 2: BIOS information 2-27 2.8 Tools menu The Tools menu items allow you to input the label of the DIMM module installed on the selected slot. Label Allows you to...