System Fan (90b) error message on startup

[IBa]

Hi!

When I try to switch on my computer a black screen appear with this error:

"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. "

Do I have to bring it to a repair service point or can I solve this problem from home?

Thank you in advance,

Isabelle

[Lord_Nikon]

There are 3 steps you can try below, if none of these resolve your issue then the computer will need serviced

1. Turn off computer, remove battery and AC adapter, hold power button for 30 seconds, reinsert battery and AC, turn on

2. Update/restore BIOS, click link for full steps

Try both, update first then restore if error still present

Update:http://support.hp.com/us-en/document/c00042629
Restore: http://support.hp.com/us-en/document/c02693833

3. Clearing vents, this should ideally be done with a can of compressed air which can be purchased from many vendors fairly cheap, in a pinch a vacuum cleaner may work, the vents are located on the sides and bottom of the machine

[IBa]

Hi,

Thanks for the reply. With the first 2 steps, I will not reset all data in the computer?

[Lord_Nikon · Accepted solution]

These do not affect data, with computers however it is always recommended to maintain a backup of any important files

[hb29]

There is a cooling fan, and this error comes only when fan stops spinning (or working).

If you a are a laptop enginer and knows how to open and service a laptop, you can easily bring a new one and change it.

But if you don't know how to open it, or service it, just don't try, as you will damage other things, simply take it to a professional repair person who can do that.

And, it has got notthing to do with the data, as it's purpose is only to cool the system. But, still i recomend that you backup ur data so that it won't get lost by some idiot's mistake.

[Graffette]

Hi!

I've tried everything you said but with no results. The only that the fan stop spinning. Is when i use the keyboard..any suggestion?

Thanks!

[hb29]

HP Laptops come with a technology called "HP Cool Sense" which regulates the fan's speed automaticlly, if laptop is not heated up the fan stops and starts again when it gets heated up.

But if your laptop is suddenlly/ automaticlly turns off due to overheating  whenever you are doing something, that means your fan is faulty