Fan cooling 90 b on Windows 7 Pavilion dv6-3225dx error

Hi, I have a HP Pavilion dv6-3225dx, winddws 7 64 bit laptop for over a year and I started to receive a black screen at startup which said cooling fan error 90 b problem.

The problem started when I was still at school and I had to watch this long movie for an assignment.

The error would only be the beginning on all 2-3 weeks or so, one or two times, and especially when I turn it night and turn it on again 12 hours the next day later. I tried to update the BIOs from HP support assistant menu, but twice the update failed once it restarts after a update.

When the laptop starts it starts smoothly without problem, and the fan does not strong when the error screen appears.

A friend told me it might be dusty inside the fan or the fan needs to be replaced. But I thought I'd ask around on the forum to see if anyone has a solution (maybe something is not installed?)

the BIO system version is F.29

Thank you!

Hello:

Your friend is correct.

I would try cleaning first cooling system since it is the best thing to do.

Unplug the computer and remove the battery.

Get a can of compressed air at your local office supply store.

Put a toothpick in the air intake fan and place it between two of the fan so the fan blades don't pinwheel when you spray compressed air, as setting the fan will ruin the bearings.

Spray the air in two ways - through the socket of the fan and the exhaust fan vents. Do a couple of times until you see no more than dust coming out ducts.

Failure to remedy the problem then maybe the fan/radiator Assembly will be replaced.

Looking at the specifications of product for your laptop, it seems that the Fan/Heatsink Assembly you need is

603690 001.

Consult the service manual, Chapter 3, page 21 for more information and Chapter 4 for the procedures for removal and replacement.

http://h10032.www1.HP.com/CTG/manual/c02657339.PDF

Tags: Notebooks

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