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511- cpu fan on a desktop is not detected - Computers & Internet

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5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

herminio_hal
  • 210 Answers

SOURCE: cpu fan can not detect when boot at hp dx 2300

YOUR CPU FAN MIGHT BE VERY DIRTY OR IS NOT WORKING. YOU MAY CLEAN THE FAN AND HEAT SINK. AFTER CLEANING AND YOU TURN ON THE THE PC AND THE FAN DIDN'T WORK YOU CAN BUY THE CPU FAN TO A ELECTRONIC STORE SUCH AS FRY'S ELECTRONIC'S. HOPING THIS INFORMATION WILL HELP YOU SOLVE CPU FAN PROBLEM.

Posted on Aug 14, 2009

josiahb
  • 25 Answers

SOURCE: When i put on my computer, this message apear :

This will likely be caused by a loose connection, if you look inside the machine there should be a cable running from the fan on top of your cpu to the motherboard. If thats disconnected or loose then plug it back in and all should be right with the world!

Posted on Dec 24, 2009

tommya300
  • 724 Answers

SOURCE: what cause error code 511 cpu fan not detected

3 wire conductor fan. The 3RD WIRE IS THE fan sensor located in the fan's electronics this is malfinctioning come in tthe construction of the fan itself.

Posted on Aug 23, 2010

WASTED28301
  • 50 Answers

SOURCE: The pc not starting up

TRY F8 WITH NETWORK SEE IF IT STILL SHUTS DOWN IN 10
OPEN THE SIDE TO LOOK INTO THE SYSTEM TO SE IF THE CPU FAN IS SPINNING AND SEE HOW CLEAN OR DIRTY IT IS. IF IT'S SPINNING SHUT IT DOWN AND DIRTY YOU'LL HAVE TO CLEAN IT UP,THEY HAVE AIR IN A CAN
USE THAT TO BLOW OUT THE JUNK IN THE SLOTS AND SEE WHAT HAPPENS WHEN YOU FIRE IT UP THIS TIME

Posted on Oct 11, 2011

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1 Answer

I have 4 brand new HP Compact 8200 Elite Convertible Mini Towers. 2 are giving me the error message 511 CPU Fan not Detected. On both computers the fans are running, so I am assuming they are not running...


If the option exists to turn off speed control on the fans and allow them to run on maximum I would try that first. Additionally if these are brand new warranted I would exercise the HP on-site warranty if this is available, usually Business machines from HP have on site repair.

Oct 23, 2013 | Computers & Internet

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.)

I hope this helps. Please add a comment with more information about your system for more assistance.

Cindy Wells

May 12, 2013 | Computers & Internet

1 Answer

511-cpu fan not working


Hi, your CPU fan power connector was not connected. Please checked it.

Thank you.

Oct 05, 2012 | HP Computers & Internet

2 Answers

The pc not starting up as it should. it displays on the black screen, 511-CPU fan not detected. I use F1 to continue the start up. but shuts down in about 10 minutes.


withtout the fan the computer will overheat and shutdown.
open the case and see if the fan moves at all.. is it to clogged to move. can of air will fix the problem. blow the dust away then vacume the stuff that falls out.

if not dirty then you need to replace the fan.

Aug 29, 2011 | HP Compaq d530 SFF PC Desktop

1 Answer

511-cpu fan not detected


are you the one opening your desktop computer?

If you are, check your cpu-fan connector pin if its properly connected to the motherboard

If not

check if your cpu fan are working if it didn't rotate replace it with a new one

Jul 26, 2011 | Compaq (283983-001) Motherboard

1 Answer

511-cpu fan not detected


check fan if fan ok then check hard ware near fan jack sarfaysamandit fet or transister
if fix your problem click yes for vote

Dec 27, 2010 | Compaq (283983-001) Motherboard

3 Answers

What cause error code 511 cpu fan not detected


3 wire conductor fan. The 3RD WIRE IS THE fan sensor located in the fan's electronics this is malfinctioning come in tthe construction of the fan itself.

Aug 23, 2010 | HP Compaq d530 SFF PC Desktop

1 Answer

When i put on my computer, this message apear : 511-cpu fan not detected. I have a Compaq Evo D510 CMT and i use Windows Xp. Thaks for the help


This will likely be caused by a loose connection, if you look inside the machine there should be a cable running from the fan on top of your cpu to the motherboard. If thats disconnected or loose then plug it back in and all should be right with the world!

Dec 24, 2009 | Compaq EVO D510 CMT P4 2.5/20GB/256MB...

1 Answer

Cpu fan can not detect when boot at hp dx 2300


YOUR CPU FAN MIGHT BE VERY DIRTY OR IS NOT WORKING. YOU MAY CLEAN THE FAN AND HEAT SINK. AFTER CLEANING AND YOU TURN ON THE THE PC AND THE FAN DIDN'T WORK YOU CAN BUY THE CPU FAN TO A ELECTRONIC STORE SUCH AS FRY'S ELECTRONIC'S. HOPING THIS INFORMATION WILL HELP YOU SOLVE CPU FAN PROBLEM.

Aug 14, 2009 | HP Hewlett Packard Compaq dx2400...

2 Answers

Error 511


It means the 3 pins for that fan are not working on motherboard . I suggest you use the motherboard 3 pins for the chasis fan and buy a CPU fan with 4 pin setting that connects to your power supply ( much better current )

Jul 11, 2008 | Compaq (283983-001) Motherboard

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