2008-01-16, 02:25 | Link #1 |
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'Processor fan not detected'
My computer has recent error that says 'Processor fan not detected'.
I'm wondering two things. A) I have a Dell Dimension 4500, does the fan have to be a specific model in order to be compatible? B) Is installing a new fan easy enough for someone with no experience with computer hardware? |
2008-01-16, 02:56 | Link #2 |
You could say.....
Join Date: Apr 2007
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Ok be a bit more specific.
first thing to do check that it s actually fan failure. You'll have to take off the side panel and boot up the pc. Looks something like this http://www.swiftnets.com/assets/imag...ts/mcx64-v.jpg Is the fan spinning? Is anything obstrcting it from spinning, dust build up, a stray wire are common causes Also is this under warranty? if it is send it to Dell. If not continue. Do this first then I'll go into more detail about replacing the fan assembly and what to buy. It's not real difficult bt it's a bit long winded from the parts buying stage to installation
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2008-01-16, 03:57 | Link #4 |
Obey the Darkly Cute ...
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Join Date: Dec 2005
Location: On the whole, I'd rather be in Kyoto ...
Age: 66
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ah... fan bearings are probably dead then (unless the power connector from the fan to the motherboard is just loose -- you might try reseating the connector just to see if the connection was loose).
I'll assume since its a Dell it probably has an Intel cpu. You'll have to buy a new heatsink/fan assembly. You have literally hundreds of choices in fans -- limited by what will fit in the space around the cpu. Just try to find a fan with the same style connector (usually 3 pin) and roughly the same size heatsink. Shouldn't cost more than $10-$20. Getting an old heatsink off of a cpu can be tricky sometimes. First you have to loosen/disconnect the clips holding it to the mobo. That can be a bit scary, especially since some fan clips basically require you to take a flathead screwdriver and press down really hard on a clip notch to disengage the clip. The better heatsinks have a nice fliphandle clip release. Then the heatsink might have to be pried off of the cpu because the conduction paste has sort of welded the heatsink to the cpu (more scary prying). This isn't as bad as it sounds but it *feels* scary for most first timers because you think you're going to crack the motherboard sometimes. If you get past all that putting the new heatsink/fan on is pretty straightforward, especially if it has a snap-on fliphandle rather than the crappier "push with screwdriver with about 20lbs of force" types. My description of the process is very short-hand - just to give you an idea. As hobbes_fan says, it is a rather detailed process. You might snap a closeup picture or two of the motherboard and the cpu/heatsink -- and then post those so we can understand any nasty details.
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2008-01-16, 04:06 | Link #5 |
You could say.....
Join Date: Apr 2007
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Ok probably safe to say the fan is dead.
Do you have any documentation from Dell? It should tell you if it is a socket 478 or LGA775. From looking around it seems to be socket 478, but verify this with your documentation. This is important as replacing the whole thing will probably be cheaper and less of a PITA so you'll need to order the appropriate socket type. They have differing install methods so I'll wait until specifics are available (should be around 10-15 dollars) here's how to remove the heatsink http://support.dell.com/support/edoc...ce.htm#1102481
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2008-01-16, 04:13 | Link #6 | |
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2008-01-16, 04:53 | Link #8 |
Μ ε r c ü r υ
Join Date: Jun 2004
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Edit: Comments made after missing the "processor" part from the fan error. So, even though there is usable information, my suggestion would be to read it to your enjoyment, only.
People usually get this error after replacing the case fan too. So, as long as you place a fitting fan inside (the connector may or may not match dell's requirements), you can ignore the error. For the fan, just buy a regular 92mm fan and either place it in the shroud or screw it to the case. Check Newegg, the prices for such fans are quite cheap, you can get a better and quieter one there (I suggest to not buy a replacement fan from Dell, as it is usually refurbished and not worth what you pay for). I understood the problem as case fan error - you don't need to replace heatsink in this case. But just to have an upgrade, if you also want to replace the heatsink (which is suggested), then you need to be very careful, as Dell's heatsinks are usually out of the regular world, their sizes are just different from what you can easily find, so you need to make some careful arrangements inside, which allows for easy mistakes. Check either dell forums, or search the keywords in google that explain you how to change that too. But, I believe you need to buy more than the heatsink. Last edited by Sazelyt; 2008-01-16 at 23:48. Reason: Need to post a reminder... |
2008-01-16, 05:14 | Link #9 |
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By the way, I tried turning on my computer to see if I can dig out any of the files as quick as I can. But as soon as I log into an account it reboots.
I read that that happens when the computer gets too hot that it'll shut down to prevent potential damage but it's barely warm and it's pretty cold down here too. That's normal and it won't happen again after a replacement right? |
2008-01-16, 10:08 | Link #10 | |
AS Oji-kun
Join Date: Nov 2006
Age: 74
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http://support.dell.com/support/topi...n&lnki=0&s=dhs and enter the "service tag" code for your machine. It's on a sticker somewhere, usually on the back. That will bring up all the documentation available for your machine. Or you can search by model name/number from the same page.
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2008-01-16, 20:09 | Link #11 | ||
You could say.....
Join Date: Apr 2007
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"Processor" fan error. There is only one processor and one processor fan. Guess where that is? On top of your heatsink. You can run pc's without a case fan. In most PC's the exhaust fan in your PSU is enough. Unless you have a PWM case fan you will never ever get a case fan error, which dell never uses anyway if they do it's only recent as PWM tech in case fans are fairly recent. A failed case fan will never cause a critical shutdown a failed heatsink fan will. All Dell case fans are connected by 4 pin molex directly to the PSU, your motherboard which does the fan control and monitoring will never be able to detect it if it isn't connected to it. Now if you read his posts he has done the diagnostic work and identified it is the heatsink fan that refuses to spin. Has absolutely nothing to do with the case fan. The only reason we're advising him to get a new heatsink assembly is he'll have to take off the old one anyway to remove the fan. A new fan costs like $6 a new heatsink + fan assembly is like $10. Removing the actual fan from the heatsink and replacing it is a huge PITA. The only problem that he may run into is whether the plug on the Heatsink Fan is proprietary. That is why he needs to consult his documentation, if it is he has no choice but to order from DELL. Quote:
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2008-01-16, 23:34 | Link #12 | |||||
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2008-01-17, 00:11 | Link #13 | |
You could say.....
Join Date: Apr 2007
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Why would you install a top of the range heatsink on a dell? you can't overclock it. Dell takes great care to make sure their PC's are impossible to overclock. A standard size design will be sufficient. Look at the processor too, Dimension 4500's had generally low end p4's around 2.0ghz. Not exactly toasters.
(OP DO NOT BUY ANYTHING WITHOUT CONFIRMING TECHNICAL SPECS OF YOUR PC) Standard aluminium designs like this will more than suffice http://www.newegg.com/Product/Produc...82E16835150086 AFAIK dells have this stupid shroud/vent system as well so chucking in something like this http://www.newegg.com/Product/Produc...82E16835185114 probably would be more trouble than it's worth with additional mods. I do know definitely that dell's have used 5 pin fan connectors in the past and am not sure what other shenanigans they do other than proprietary RAM and PSU Quote:
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2008-01-17, 00:52 | Link #14 | |
Μ ε r c ü r υ
Join Date: Jun 2004
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The performance will be better, and in the case you decide to move on to a different machine, you can make use of a top of the range product instead of trashing it with the old dell.
Anyway, it is a hassle to work around replacing the original inside the dell with a different sized heatsink, so, if refurbished is ok with the op, there are some currently being sold on ebay... Quote:
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2008-01-17, 04:05 | Link #15 | |
Love Yourself
Join Date: Mar 2003
Location: Northeast USA
Age: 38
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As long as the processor is cooled and running within its temperature range, it doesn't really make a difference whether it's running at 64˚C, 34˚C, or 0˚C. If you're talking about overclocking, then you're right - you'll be able to overclock more with a better cooling solution.
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2008-01-19, 18:09 | Link #17 |
Needs a better screenname
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Okay. Got a friend's dad to take a look for me.
He says that it should be easy enough for me to fix but it has to be a specific model since all the fans we had don't fit (they have 2 wires, mine has 3). It looks easier than it sounds so I'll try taking it from here. Thanks for all the help. |
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