HP Pavilion G6 and System Fan (90B), disassembly and cleaning
This article describes how to troubleshoot a System Fan (90V) system fan error when starting up your HP Pavilion G6 Notebook PC. The error says the following: The system detected that the cooling fan is not working properly.
And it looks like this:
HP Pavilion G6 90B cooler error
The error is caused by a faulty cooling system, i.e. most likely the cooler does not rotate. Notice "doesn’t spin". The most likely cause is that the fan is stuck or is operating at too low a speed. Other options are possible, such as a faulty cooler speed sensor, but this is extremely rare. Most likely you just have to clean it and change the thermal grease to improve heat dissipation from the processor.
In this example, we are looking at the HP Pavilion g6 laptop, but this article also applies to many other laptop models, such as the HP Compaq CQ series.
This procedure should take less than one hour. But if you do not, you risk damaging the fan. The best option is to go to specialized laptop repair shop in Kharkov, where not only clean the laptop, but also change thermal paste.
Remove the cover that covers the RAM and hard drive
Disconnect and remove the hard drive
Remove the screw that holds the DVD drive, this will help open the laptop later.
Video: Hp Pavilion Laptop Turning On System Fan
Remove the DVD drive from the bay. Be careful not to break the plastic.
Disconnect both antenna cables from the Wi-Fi card and pull out this module.
Remove all remaining screws on the bottom of the laptop case.
Turn the laptop over and remove the keyboard. The arrows indicate the small clips that hold the keyboard; they need to be pushed back.
Remove the screws and pull out the ribbon cables connecting the board to the touchpad, USB ports and display module
Loosen the screw and disconnect the power cable (top right) and other remaining loops
Pull out HP Pavilion G6 laptop motherboard from the laptop case
The fan is located in the upper corner of the motherboard. Here you can see if there is dust in it.
Turn over the laptop motherboard and unscrew the 4 screws that hold the heatsink and processor fan
Clean the heatsink and processor from the thermal grease with a paper towel and a special cleaning agent. Remove 2 small screws to open the cooler housing
Here we see the accumulation of dust that stopped the fan
Clean off dust with a vacuum cleaner and brush. Apply new thermal grease to the processor and continue assembly in reverse order.