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My wife's Inspiron 8600 laptop has a problem. The fan kicks into high gear and her computer then runs very slow. This will happen just 5 minutes after starting it up, so the laptop couldn't be hot yet. She's noticed it happening when viewing pictures or videos, or using the internet. I've taken the fan out and removed some lint to see if that would help, and recently updated the bios to the latest version. She has XP pro installed, and I was thinking of doing a fresh install of the OS to see if it would help. I didn't have any luck with a bootable diagnostic disk- for some reason, it wouldn't read the disk or just wouldn't boot from it. Thanks, Pete

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  • 10 more comments 
  • thewholeheal Nov 11, 2010

    Hi,



    I'm currently running a full system scan with the latest Spyware Dr. w/ Antivirus. I also de-fragged the hard drive, and installed speedfan. I don't see how to change the fan settings though- there is no fan listed when I click configure, and fans.



    I'll clean up the temp files next with Registry Mechanic.



    The CPU has been running at or near 100% for several hours now, and the fan has been on full speed for the entire duration.

  • thewholeheal Nov 12, 2010

    Hi,



    Thanks for your reply- I've successfully run a full scan of the pc and deleted the offending files. I've run a registry cleaner, and found thousands of errors. I've defragged the HD, and updated the bios. I downloaded Speed Fan, but I don't see how to use it to change how the fan turns on and when.



    The problem is still there. After about 20 minutes or so, after starting up the laptop, the fan kicks on high. Task Manager shows the CPU running at or near 100% all of the time. And any programs I try to use, such as playing a video in a media player, will not work because the computer is running so slowly.



    What should I try next??

  • thewholeheal Nov 12, 2010

    Hi,



    Thanks for your comments. I have the latest Spyware Doctor w/ Antivirus installed. I recently ran a full scan and corrected what it found. The CPU does not show any program taking up the memory. Actually, I'm looking at it right now, and it shows only about 10% in use, then jumps to 100%, then back to about 10%, with the fan running full blast the whole time. The computer is running very slowly- I can't even watch a video in a media player. After closing the media player, the CPU went back to 10%, and then jumped to 100% briefly- while the fan was still on high.



    What should I do next?

  • thewholeheal Nov 12, 2010

    Ok- started in safe mode. The fan kicked on high after about 8 minutes. Even then, the CPU was only at about 15 to 20%. There was no program in normal or safe mode that accounted for most of the CPU use. Even in safe mode, I could not play a video with my media player. It ran very slow and choppy, and while it was playing, the CPU went to 100% constantly.

    What shall I try next?

  • thewholeheal Nov 12, 2010

    At what temperature would you consider the computer to be overheating? I downloaded Speed Fan, and it showed the core temp at about 118 degrees. I tried blowing fans on the laptop for several minutes, and the laptop still had the fan on high, and the air coming out of the laptop was cool, as was the bottom on the laptop itself.

  • thewholeheal Nov 12, 2010

    I'm sorry- I meant 118 degrees Fahrenheit, not Celcius.

  • thewholeheal Nov 12, 2010

    Not sure if my reply went through- but it's actually only 118 degress F, not Celcius.

  • thewholeheal Nov 12, 2010

    How do I clean the motherboard and case?

  • thewholeheal Nov 12, 2010

    In that case, I won't bother trying to attempt it. Would reinstalling windows do anything, if it's not an issue of dust?

  • thewholeheal Nov 13, 2010

    OK- so what you're saying is that it's most likely a heating issue- but that doesn't add up. The temp. of the unit is low, only 118 degrees F, and the air coming out of the fan is cool, and after I blew fans on it, and the bottom of the laptop was cool, it still had the fan on high. Plus, the fan will kick on shortly after starting up the computer from cold. So I'm not convinced it's a heating issue at all. Any thoughts?

  • thewholeheal Nov 13, 2010

    Could it possibly be a hard drive issue? One that would be resolved by replacing it?

  • thewholeheal Nov 13, 2010

    No, unfortunately it did not solve the problem.

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  • 4,737 Answers

If you mean it happens every time after 5 minutes, then there must be a program running in the background which isn't noticeable or which you haven't noticed. After it's switched On, leave it for 5 minutes doing nothing, only leave Task Manager opened and watch the Processes list the the CPU Usage. I would also like to know which antivirus program or similar programs are installed on your computer.

It's always important to first diagnose the Softwares/Programs before dealing with the Hardware(s). It could be Hardware as well, but since you didn't mention anything about software or programs, let's try just one time as a verification.

Please don't forget to click the "Show Processes from all users" in the Processes section of the Task Manager. If you see any program which utilizes the maximum % of CPU, then note and terminate if possible (End Process Tree) and see if that helps or not. Definitely you'll be able to notice something in the Task Manager.

Let me know the result. All the Best.

Posted on Nov 12, 2010

  • 7 more comments 
  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    Once again, check the processes and verify which program(s) makes it to reach 100%. Drag the Task Manager window from a corner and expand it until you could see all the running processes (you don't need to check the "System idle process"). If you find any program or application which is causing the CPU to reach 100%, terminate it by right-click the process name and End Process Tree. If this isn't possible, let me know with that particular program/process(es).





    If you find nothing, restart your computer and boot into Safe Mode and do the similar procedure. To boot into Safe Mode, keep tapping the F8 key on the keyboard as it restarts (until you see the Advanced Boot Options screen), use the arrow keys on the keyboard to navigate through the boot options and press Enter to select (proceed) the options.





    Actually, I've posted you this similar post, but I don't know what had happened, it just lost.. I have being late if I am available.. Sorry for the delay.

  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    Well, for now, I would suggest you to apply Cpu Coolant paste/gel on between the processor and the heatsink fan. It's also said that Toothpaste is possible to use as a cpu coolant gel (Click Here to Read More), but I haven't tried yet as I am afraid if it fails :-).





    You can also try a Table Fan trick to test whether it's the processor overheating issue or something else. Open up the case and make the cpu fan visible, power on the machine and place a Table Fan in front of the CPU fan so that it will blow air on it. Leave it for few minutes i.g. 10 mins, and move the fan so that you can check the cpu fan again. This will clarify whether the problem cpu overheating issue or not.





    The video card can also cause this issue, but I am not very sure about that as it's only in rare case when the video card is bad. Or it's also possible that there's problem on the motherboard, possibly circuit.





    I would also suggest you to clean up all the components and try again. You have to disassemble the whole unit to do this.





    Let me know if you need further help.

  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    Ok.... I can say it's very high, the average CPU temperature of an Intel Pentium Mobile (as per Manufacturer's spces of Dell Inspiron 8600) should be 100 degree Celcius. If it's more than 100, then it's high. Increased of more than 18 degree celcius is not acceptable, if it's more than 5 to 6, not a big issue. It could be a little less than 100 degree celcius or a little more. I hope this helps.

  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    Aww.. then it's very low, something around 47.7 degree celcius. You can try removing the hard disk drive and the CD/DVD Drive. After they are uninstalled, leave the machine on for several minutes and see if anything happens or not, if it seems no problem without them, reinstall one of them and try again. This will help you if it's related to hard disk or Cd/Dvd drive connection issue. I would highly recommended you to clean the motherboard and the case.

  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    Yes I've posted back:



    "Aww.. then it's very low, something around 47.7 degree celcius. You can try removing the hard disk drive and the CD/DVD Drive. After they are uninstalled, leave the machine on for several minutes and see if anything happens or not, if it seems no problem without them, reinstall one of them and try again. This will help you if it's related to hard disk or Cd/Dvd drive connection issue. I would highly recommended you to clean the motherboard and the case."

  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    You have to disassemble the whole unit and you'll need to use a pcb cleaner like IPA solution with a soft brush. It's not that easy to disassemble a laptop and honestly I have not much idea about the screws and other latches about this model. Even, you can make mistakes and damage other components if you don't know how to disassemble and remove the motherboard and other components. I would suggest you to call a local laptop/computer tech or let this be done by an experienced fellow.





    Dust or other stuffs stuck/clogged on the mother could obstruct the flow of voltages on the pcb bus (circuit) along the mother board.





    This is all what I could suggest you for now. I am sorry that I can't continue with the disassembly since it's risky and once done can't be reverted. I would like to be honest than failing.





    Good luck.

  • Lebanon Raingam
    Lebanon Raingam Nov 12, 2010

    If it's related to malicious programs, definitely reinstalling Windows will resolve the issue, but I can't guarantee since the problem is most likely with Heating. You can give a try if there's something that we couldn't notice or something that is not easily noticeable. But if it's with what i had said, i.e overheating, you'll not be able to install the Windows. Give it a try after all files are backed up.

  • Lebanon Raingam
    Lebanon Raingam Nov 13, 2010

    I have no more comments. If I were you, I would only reformat the C: drive and reinstall windows. If that doesn't help, I would clean all the hardware components. Heating is not only with the Processor, but it could be with the Video Card Module, the CMOS chip, etc..



    I am sorry that I couldn't walk you through more than these. I opt out if you are unable to clean the hardware components and reinstall the windows.

  • Lebanon Raingam
    Lebanon Raingam Nov 13, 2010

    Yes it's also possible, but I can't assure for now. (I wish I am physically with you so that I can test with my spares). An old hard disk drive or a dying hdd or a hdd with internal problem definitely affects the speed of a computer and finally it dies unexpectedly.





    Actually I don't recommend "replacing" before testing (trying with another Hdd or Ram), if borrowing is possible or if you have another laptop, you can give it a try. (Note: A pre-installed hdd on another system may not boot, there could be driver's or software conflict.)

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  • 12,061 Answers

Ok first get a program called speedfan, this will give you complete control over your fan.
http://www.almico.com/speedfan.php
next, you need to check out what programs are starting up at boot time, these most likely are starting up and running in the background hogging the CPU, and that's why the Fan comes on, as when the CPU is under heavy useage the Fan kicks in to cool it down. It is NOT a Fan problem per sa.
Open up RUN>msconfig (enter) when Msconfig comes up, go to the Startup Tab and Uncheck whatever you do NOT want to start up, frankly you need nothing at boot time, really, as anything needed can be started up anyway.. also check out the Services tab too, also here carefully go over what is starting up here too, and disable as necessary. in BOTH areas. This will improve speed tremendously.
make sure too that you do a disk cleanup, Right click on the HDD and choose cleanup, this will remove all rubbish and temporary files and make the system on the whole more responsive too,

Finally do a full malware antivirus scan too... meticulously go over the PC looking for malware or Virus, especially root kits, download an anti-rootkit software and run it to be safe also. Once these things are attended to, i am sure you will notice a more responsive system.
If of course it is still all mucked up, after trying all this, than as you suggest, a new fresh install may just be the best thing.. make sure you save all settings for transfer to the new install, also drivers too.. reinstall, update all service packs, then restore the users settings, ya be good to go, hopefully it will not come to that.

Posted on Nov 11, 2010

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