Laptop startup error “… cooling fan is not operating correctly. … System Fan (90b) ”

HP pavilion DV6, DV7, G6, G7 notebooks- one of the most common models in the Russian Federation. For the same reason, these laptops are more likely than others to carry for repair to our service center.

For notebooks of these series, the weak point is the cooling system. Here we will dwell in a little more detail.

Fan, aka cooler- from the English. coolig fan-cooling fan. It is located inside the laptop case and its task is to cool copper tubes that remove heat from laptop processors (CPU, GPU).

The cooler is the most wearing part in a laptop, and if not properly maintained, it often breaks down. In addition to everything at HP these fans (by the way, the manufacturer is Sunnon) are rather weak.

This is not the first time they have addressed us with a problem when Pavilion DV6,Pavilion DV7-6xxx or HP g6 turns on, and an error message with a code appears on the screen System Fan (90B).

But even with a working fan - HP dv6, dv7, g6 and 7 get warm, and they don't just get warm - they overheat, right up to shutdown.

In light of the above:

HP pavilion notebook PCs need to be cleaned once a year and thermal grease changed
On game models with video cards from ATi and AMD, for the summer it is better to buy a cooling pad
Do not use the HP pavilion in dusty environments or in the sun.

When starting the laptop, it appears error message: System Fan (90b)

The system has detected that a cooling fan is not operating correctly.

Continued operation is not recommended and may cause unpredictable behavior that could result in random shutdown, data loss or possible system damage. The system will shut down in 15 seconds. To prevent shutdown and continue operation, press the Enter key now.

System Fan (90b)

Translation of error text

The system has detected that the cooling fan is not working properly.

Continuing operation is not recommended and may lead to unpredictable results and may result in accidental shutdown, data loss, or system damage. The system will turn off after 15 seconds. To prevent shutdown and continue working, press the Enter key now.

System fan (90b)

System Fan Cooler Error (90b)

In addition to the System Fan error (90b), the system fan may spin faster and louder.

System Fan (90b) error means there is a problem with the heat dissipation system. There are 2 options here:

The system fan does not spin correctly.
The temperature inside the case is too high and the fan cannot dissipate heat quickly enough.

The System Fan error message (90b) appears to help prevent costly damage to your computer.

To fix this error, follow these steps:

If you notice that the system cooler hums and blows warm air out of the laptop, then you need to clean the radiator grill through the external vents using compressed air. This must be done very carefully and with the laptop turned off. Dust can accumulate in the vents and around internal cooling components, preventing heat dissipation. After the dust has been removed, try turning on the laptop and look for an error.

Performance hard reset... Performing a hard reset can reset the recorded thermal values in memory and allow the computer to be used again - even if only for a short time to access and save all important files before servicing.

Laptop repair and maintenance to clean internal components and replace the fan if necessary. Note maintenance algorithm:

dust from all internal cooling components
the wires from the fan are connected to the motherboard securely
the cooler blades are intact. If problem persists, replace system fan
remove old thermal grease from integrated circuits and heatsinks, and replace with new thermal grease

When turning on the laptop, the error “The system has detected that a cooling fan is not operating correctly. … System Fan (90b). ”

HP Pavilion g6-2211sr Notebook PC. Its weak point is the cooling system.

If you continue to turn on or reset the BIOS and then continue, it turns on, but then turns off. The next time you turn it on, the error “Thermal shutdown occurred” will be added, as if the previous shutdown was due to overheating.

The laptop is very hot to the touch. We check the temperature: a couple of minutes after turning it on, it reaches 75 degrees on the motherboard, 119 on the processor.

Cleaning from dust is required, replacement of thermal paste

These errors mean either that the system fan does not rotate correctly or does not start, or the temperature inside the case is too high and the fan cannot dissipate heat quickly enough.

119 degrees on the processor, in which case the laptop had to turn itself off.

Google the working temperature on AMD processor A4-4300M - no more than 60 degrees in idle, no more than 80-90 under load.

We disassemble and look. The old thermal paste has dried, there is not much dust, we clean everything and apply a new thermal paste.

We collect the laptop, check it. After cleaning 90 degrees, idle. Not felt at all to the touch. Cleaning helped a little. The message disappeared when turning on the laptop, but another problem appeared.

Sensor buggy? BIOS update

We see that the temperature on the motherboard and video card dropped to 40 degrees. Probably the sensor is buggy.

In Intel microprocessors, the temperature sensor is a thermal diode or transistor with a closed collector and a base as a thermal diode, in AMD microprocessors - a thermistor.

Or the sensor itself is buggy, which is built into motherboard, or BIOS incorrectly displays, takes readings from the sensor. This usually happens with new processor models, when the BIOS cannot really recognize it and at the same time makes a mistake with the temperature readings.

To solve the problem in case of an erroneous reading, you can update the BIOS. So we will do it. On the Hp website on our laptop model, download latest firmware... Everything is updated very simply, we run the downloaded file from under the system.

From the 2015 F12 version I have upgraded to 2016 F2A. Reset the BIOS and set Disabled in the CPU Warning Temperature line (on some models). The update did the trick. The temperature shows 56 degrees.

Please note that the program for checking the temperature may also show an incorrect result, it is better to look in several, I look with the help of AIDA64 and HWMonitor.

Fan needs replacement

Most often, in HP laptops, the solution to the problem with the error, the cooling fan is not operating problem, is correctly solved by replacing the fan or its lubricant (if it is difficult to rotate).