Laptop fan constantly running

Posted on 2006-03-27
Last Modified: 2013-11-10
Hi ... I have a compaq presario laptop and the fan seems to be running all the time. Even if it's been off all night and you switch it on the fan will be on. I've checked the bios and there's an option for the fan to be always on on ac power but this is disabled.
I'm not sure if this is related but you get random incorrect keystrokes eg press e and get an m
Question by:stefanomarco
    LVL 20

    Expert Comment

    i think that your laptop came with a utility disk that allows you to run test on your laptop...

    If you do haev the disk. place the cd on the cdrom and then make sure that you boot from disk. the utility disk should allow you to test all the OEM devices. the test should tell you if the fan is failing....

    If you dont have a utilities cd then you should move the laptop to a ventiladed area and see if it does the same. i think that your laptop is overheating and the fan is trying to to its best to keep the air flowing. something must be obstructing the airflow on your laptop you might want to clean the fan with an air dust....

    good luck
    LVL 1

    Expert Comment

    Overheating is always a problem.... What kind of Presario is this? Does it have speedstep technology?

    Author Comment

    presario 1500 1550ap
    speedstep technology?

    I don't have a utility disk :(
    LVL 20

    Assisted Solution

    LVL 1

    Accepted Solution

    OK. This one is equipped with speedstep. The speedstep technology makes the computer use only the cpu speed needed for the tasks it is running.

    The problems you are experiencing can have several causes:

    1. Your computer has been infected with spyware, adware, virus or trojans running in the background demanding cpu resources, so the fan has to keep running to keep it cold. Solution: Run ad- and spyware tools to remove any malicious programs. Ad-aware, Spybot or Spyware Doctor are excellent tools. Run a good antivirus tool.

    2. The speedstep has not been set correctly or is not functioning. Solution: Be sure to install the softpaqs found here (Systems management):

    3. The air in- and out openings are dirty and has to be cleaned. Solution: Clean it...

    4. You have installed resource craving software like screensavers, windows blinds or other software that runs in the background. Solution: Uninstall the software. (BTW: Panda Antivirus can make the fan keep running because it really eats up the resources...)

    Good luck


    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    Enabling OSINT in Activity Based Intelligence

    Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

    In this article you will get to know about pros and cons of storage drives HDD, SSD and SSHD.
    I use more than 1 computer in my office for various reasons. Multiple keyboards and mice take up more than just extra space, they make working a little more complicated. Using one mouse and keyboard for all of my computers makes life easier. This co…
    Here's a very brief overview of the methods PRTG Network Monitor ( offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
    Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

    779 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    15 Experts available now in Live!

    Get 1:1 Help Now