Re: cooling fan hp dv7

Hello zeshanawan,
Welcome to the HP Forums.

I see that you're getting an error message indicating the cooling fan isn't working correctly when you power up your notebook. I will do my best to help you with this issue.

I was able to locate this document for you: System Fan (90b) error message on startup. It has several steps which will lead you to other documents that may be helpful to correcting the error that you're getting. Follow each step and additional documents listed prior to moving to the next suggested.

If you end up requiring further assistance for this, please provide me the model number of your notebook.
How Do I Find My Model Number or Product Number?

Thank you for posting on the HP Forums.