Question about Dell Dimension 4600 PC Desktop

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We were disconnected last week; can we begin

We had connected the necessary connections to the motherboard, but still no cpu fan or noise.

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If your computer is running kind of sluggish, you can fix it with an easy clean up of your registry. Here's a link to a free scan that works well:
www.your-free-info.com/RegCure
I've used this one and it sped up my computer by quite a bit. Hopefully this helps.

Posted on May 10, 2008

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Hello,
See that all the power connectors are connected correctly to the mother board.
See that the power connector is connected of the Fan

Let me know if your problem is solved and rate me as FIXYA!

Posted on May 10, 2008

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The most important thing that I was thinking about is that you told me you were using a PENTIUM over a mother that is for AMD processors, make sure of that because if its as you told me, then you will never be able to fix that cuz its impossible for an INTEL cpu to work on an AMD plataform...

well it seems that if everything is well connected then your either your power supply is failing or not reaching the power demands or your motherboard is completely down... This is one of those cases where you only have to try and see what happens, thats why its hard for me to say whats happening whithout trying somethings...

things like: mother just with cpu ram and vga adapter over a table and booting it up. (what we already tried), then a bios restart.. (with the cmos jumper)... try a different power supply in case you have one.

stay in touch

Posted on May 08, 2008

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Posted on Jan 02, 2017

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2 Answers

What makes 511-cpu fan not detected and 512-chassis not detected


Are you seeing this error on a system you built or a pre-built system? If it is a pre-built system, check that the fans are running. Next check where the fans are plugged in, the CPU fan must be connected to the CPU fan connector on your motherboard. The chassis (rear case fan) only needs to be connected to the motherboard if you want the monitoring/PWM (modulated fan speed) option. If your CPU fan is powered directly from the power supply, change this.

If this is a system you built or recently updated the case, check your fan power connections, as above. Next check the fan speed. My ASUS board will give the "CPU fan not detected" error if the CPU fan speed is too slow. A different CPU fan will solve the problem. (I got my fan with the CPU; it works fine.)

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I have a Dell Inspiron 530. Was getting 2 quick beeps on start up and loud fan noise. I replaced the cpu fan but the one I bought did not have the right plug for the motherboard connection. I had to modify...


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Pc wont boot up, instead a red light flickers.


Flickering LED means power supply is overloaded with something. It might be inside of the supply, but sometimes it is something else. Try that:
1. Disconnect everything from the motherboard except power supply and power button;
2. Disconnect all power connectors from all drives;
2. Remove any cards from the motherboard so all you have is power supply and motherboard with CPU and RAM, nothing else. You can keep connected the monitor and keyboard;
3. Press Power button. Will motherboard turn on normally?

If no - check electrolytic capacitors especially around the CPU, if some of them are "popped" replace them.
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New cpu fan has 3 prong connecter, old has 4. what is,or does the 4th blue wire have to be connected?


Hi,
You can connect the CPU fan as normal but it can only run at one speed and voltage hence only having 3 wires.
Your other CPU fan which had 4 wire was able to run at 2 different voltages and speeds and are mainly used to keep the noise down and run quietly.



Regards.

Jul 10, 2009 | eMachines T5048 PC Desktop

1 Answer

ASUS P5KPL-AM CPU fan connection.


You should still be able to connect the 3 pin connector of the fan to the 4 pin connector on the mobo, the keying tab is offset so that you cannot connect it to the wrong pins.
If you still don't want, or can't connect it there, simply go on the Bios (press delete after you turn on your computer) and you will find an option to monitor CPU fan speed.
If you need any more help, let me know

Alex
www.CAS411.com

Mar 28, 2009 | Computers & Internet

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Winfast 760GXK8MC 754 SEMPRON aTHLON 64 pROCESSORS


disconnect all external devices and then bypass the UPS and plug the power cables, monitor and computer, into wall socket outlets. Make sure and disconnect any ethernet cable as well.

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2 Answers

Fan error during boot-up


Power supply, that can be the cause. Did you try disconnecting few devices to check if the CPU fan has enough power to turn itself on. Usually motherboard will have two connectors for the CPU fan, you may try connecting it directly to the power supply. Also Check through the BIOS and see if there is a setting to disable the CPU Fan monitor (Hardware Monitor??) It should be where the temps and voltages are. The BIOS in most computers has an option to monitor a CPU fan. If none exists, then the option needs to be disabled. I am assuming the error is occuring during the BIOS stage of bootup. If the error occurs in Windows, it may be that some software has been installed to monitor a fan that doesn't exist. Sometimes monitoring software comes on the motherboard CD and someone may install it, thinking it is a driver. It is not necessary. Good luck!

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