Dell :: Fixing The CPU Fan On Inspiron 9400Fan Not Working Fix
Jan 19, 2009
I noticed that the main fan on my laptop (dell 9400 inspiron) is was on a lot lately. It would come on after 5 minutes and stay on... full power, maximum RPM...
Had a look at the laptop and noticed there are two fans... A small one over the CPU, and a main one that cools the whole internals.
The main one was on all the time, and the small CPU one did not seem to come on at all. (that side of laptop was always hot too)
I downloaded a program (http://www.diefer.de/i8kfan/) that allows you to manually activate the fans to check they were working. Sure enough the secondary(small CPU fan) would not spin with the test program.
I carefully opened up the laptop and removed all the pieces I needed
to access the fans. This involves carefully removing all casing screws, then removing the keyboard screws, then removing the screws under the keyboard too. You need to disconnect the keyboard, the WLAN power wires, the cr2032 battery wires, the screen bus, and 2 or 3 other connectors. just take note of what your disconnecting and how it is connected. Once I had seperated the laptop into two pieces and exposed the fans, I noticed a big piece of lint/dust ball in between the small CPU fan blades.
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Sep 12, 2009
is this covered under warranty? accidentally one of the Keys detached and I can't seem to put it back lol.. anyone help me out here? there is a plastic piece which came off as well and a rubber thing which i believe was glued n came off? not sure about that..
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Apr 29, 2009
I need to go back and edit this post. Unfortunately the solution below did not fix the problem. The Sony Vaio TT model touchpad, on many models, doesn't work properly.
No matter what you do. Send it in to be fixed. Try other drivers. Etc. The touchpad simply isnt sensitive enough. I have tried 3 of them and they all had similar problems to varying degrees.
I thought the solution below fixed it but quickly realized (see my last post below) that it didn't.
So if you're running into this problem, please contact sony, ask for technical support, and tell them you want to report that the touchpad on this model was engineered wrong .....
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Jun 10, 2011
I just got a Pavilion dv6tqe, and there was an issue with the Norton Internet Security SONAR protection that required me to remove the Norton software and then re-install. However, after I did this, the fingerprint scanner no longer works. The computer says there are no biometric devices installed on the computer. How can I go about fixing this problem?
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Feb 5, 2009
I just installed Windows Xp on a new Inspiron 1520 because my uncle hates Vista. Anyway, this is about the third time I've cleaned Vista off a computer and put Xp on instead and this hasn't happened to me and I don't know what to do...
Once I got into XP I installed the Chipset i found from a thread somewhere on this site and after I did, none of the USB ports were working. They had been prior because the chipset was on my USB stick... Any one have any ideas how to solve my problem?
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Feb 13, 2013
After turning on our Inspiron 17R laptop the cursor is between 2 user profiles and I can't get the cursor to move using the touchpad. I tried using the Hot Key to enable the touchpad but that didn't work.
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Feb 7, 2013
I have a problem with the USB..Only the one on the left is working. The one on the back and on the right are not working. I've tried to update from the Windows 7 driver manager and it didn't work. I've installed the drivers from the dell website and it didn't work. It is possible that I haven't installed the correct drivers?
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Feb 21, 2013
But when i diagonosed entire system it shows no problem with fan and at that time it is working OK..but after s/m boot it is not working.i took laptop on 2011 august(inspiron 15 R(..now my charger died and problem start preaching after 1 year.
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Jan 3, 2015
I have an Inspiron 15 with Windows 8.1 on which the Windows is not working. I am in contact with Dell but the 'expert' seems to ignore what I say and give me solutions that bear little relation to my problem. could it be that I am in consultation with a computer that emits standard replies based on keywords in my e-mails?
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Mar 25, 2010
My computer was working fine last night, shut the lid and went to bed. Woke up hit the power button and I have blue screen. Restarted and now have blank black screen. I have a XP cd I try to put it in and nothing happens. I want to boot by cd but it wont. Cant figure out how to get into setting to change order for bios. I hit F8 and that works and tried all the options and no go, still blank black. I would wipe it out and start over If I could. Nothing new was installed. It was fine last night and today it woke up nasty!?
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Jul 11, 2009
Does anyone know how to figure out what model is my heatsink, or where to buy them? i looked in ebay but can't find it.
i noticed that my laptop kept running hotter and hotter until i decided to look if the fanswhere even working and saw that the heat sink fan is not moving.
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Aug 14, 2014
My Touch Pad is not working after upgrading windows 7 to window 8.1. I am using Inspiron 14 3442. I already installed touch pad driver [Input_Driver_H4TWP_WN_18.0.7.1_A00.EXE ]. Is there anything that i can do to get my touchpad back?
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Apr 3, 2013
I have purchased a USB 3.0 hard drive, but it only works in my USB 2.0 port.I found what looks to be the solution in a previous thread linked below, however the link to one of the drivers in the thread no longer works.
[URL]
I have tried using the "Dell Driver Analyze Utility", but when I get to the stage where I need to run the "Dell System Detect" application I get an error.
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Apr 7, 2013
i bought a i3 n5110 laptop in 2011 and now it is not working.i checked it with an external keyboard and it's working.
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Dec 29, 2014
According to the manual, this model is suppose to have USB Powershare abilities, however, I cannot for the life of me get it to work for charging my LG G2 phone. My previous laptop (not a Dell) was able to do this without any issues. Powershare is enabled in the BIOS, I am using the USB port with the power symbol, but when the laptop is put to sleep or powered off, there is no power to the USB port. I have tried unplugging my phone after the laptop is put to sleep, and plugging it back in, but that doesn't work either. I have also checked and disabled USB suspend modes in the power management tabs of all USB hubs and the Human interface devices. I also tried repairing/reinstalling the chipset drivers after the latest BIOS update (A03).
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Jul 18, 2013
I have bought a new inspiron 15 3521 & after going through the community i think i have made a mistake of buying this particular model. Still trying to resolve my Bluetooth problem. I have installed dual booting Windows 7 & 8 also
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Dec 20, 2014
my dell inspiron n5010 keyboard key(g and h) not working living on osk price of new laptop internal keyboard???
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Apr 4, 2013
I have an Inspiron 1525 with 4gb RAM and 285gb hard drive (158gb free). Processor is 2.17gHz, dual core. O/S Vista. Up until very recently, it's been running fine. But within the last week or two, it has gotten veerrryyy slow. The fan seems to be running more often (maybe it's my imagination), and the video is halting even for a simple game of Free Cell. I have ccleaner which I run regularly. I have also run two different spyware programs and Norton Utilities optimizer.
I just had to replace my desktop computer a few months ago. I certainly don't want to have to replace this one too.
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Apr 29, 2013
I recently bought a Inspiron 5521 with ubuntu pre-installed, I shifted it to windows 7 OS and also updated the BIOS in the driver installing process,Before I updated the BIOS my Brightness was working fine meaning I can low the it down while on battery and use high settings on AC mode but after I updated the BIOS I could not do this feature any more....when I go to Power Options to adjust it manually the Scroll bar there doesn't do a thing, even if I low it down or take it to full settings.
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Dec 19, 2014
I've had this Dell Inspiron 15 Windows 8 for a year and a half now, and when Windows 8.1 updated, all my gestures on the touchpad stopped working. For example
I can't tap the touchpad to click,
I can't use 2 fingers to scroll anymore
I can't use 3 fingers to switch between tabs
I can't bring the charms by swiping from the right
I can't do the swipe from the left thing I think that switched apps.
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Jan 3, 2015
I recently had my hard drive replaced and windows 7 reinstalled on my laptop. My touchpad hot key is not working now. It did before. I have Inspiron N5010.
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Dec 18, 2014
I have a problem on my Dell laptop Inspiron N4050, all USB ports suddenly stopped working, I tried to troubleshoot my laptop to fix the problem but it didn't work.
I upgraded the version of my BIOS, the chipset, and downloaded the latest version of the driver but still not working, I even tried to re-format my laptop but the problem is still the same.
My laptop is already out of warranty.
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Apr 20, 2013
I am having issues with my touchpad not working, I have gone through most of the troubleshooting tips such as hitting touchpad enable/disable hotkey, turning of the laptop and holding down the power button for 15 seconds, and downloading the suggested driver. The most distressing thing is that when I go the mouse hardware/driver, the only thing that the computer is recognizing is the usb mouse I am having to use.
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Dec 29, 2014
Touch pad is no longer working. I have had my Dell Inspiron 17R for abut 15 months and the touchpad has not worked for at least 12 of them. At first I noticed the problem after my computer would install updates and I'd have to restore the computer to a particular snapshot point. That worked for all of one week. Then I also checked the drivers. That was unsuccessful. I have also tried pressing F3 + Fn and nothing. I won't begin to mention that I have to hold this laptop a particular way to get it to turn on.... I do know, the touchpad on a basically new laptop is supposed to work and the device is supposed to turn on when you press the power button without having to do some form of sorcery.
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Jan 26, 2013
i have dell inpiron 1564 laptop, its caps t y [ ] backspace lefshif keys are suddenly not working since 2 days.
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Feb 20, 2012
I've bought 2 Inspiron N7110 laptops. Both have win7 64bit OS, and 2 usb ports (3.0 ports) are not working. I have all the latest drivers form dell's web page, but I can't get them to work. Is this a driver issue or this laptop series is affected by Chipset circuit design issue? Should I return them, or there is something wrong with drivers, and it can be fixed?
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Mar 12, 2013
I had purchased a new 15Z inspiron today.Unfortunately touch screen is not working for me.I had tried Fn+F3 to enable the touch screen but nothing is happening.
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Mar 8, 2013
i m using Inspiron 15R SE 7520..when i tried to on the backlight its not working...i tried with fn+f6 nd still its nt working...what hsould i do to make it work?
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Feb 8, 2013
Or is there a button I can press to turn it off/on? It was one of the main reasons I purchased it.
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Apr 25, 2013
My dell inspiron N4010 are webcam are not working.
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