Question about Zalman Tech (CNPS7700CU) CPU Fan

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Cpu fan i had a desktop computer...last two days ago there's a problem postedwith black screen before the booting of my pc or windows...it says,CPUfan not detected....there's a choice there that if i press F1,windowswill boot... thats why i can use it now,my problem is,why my computerposting that my CPU is fun was not detected even though its ruuning of functioning after iboot my computer..? tell me how to troubleshoot my pc..thanks a lot... my pc desktop is brand new..

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There are usually more than one place to plug in a CPU fan. Only one of them is actually for the CPU fan, and monitored by the system BIOS. Make sure your fan is plugged into the right connector.

Posted on Jul 19, 2009

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Posted on Jan 02, 2017

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Asus g73jw black screen on boot up


That sounds like the GPU is cooked. The CPU is heating up trying to drive the GPU that is not responding.

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My acer desktop computer screen is black, the power says it is on but no pic, keeps cutting off, tried to back up and restore, cut off, says problem with windows and it shut off as well, HELP!


  • When the computer will not boot up, it sound like it is booting as the CPU fan is running and the lights are on. It also finds the CD ROM but it won't boot from a CD either.
  • Sometimes when you have a computer black screen on startup and the power switch light will be green and then turns to orange or amber. Everything is running.
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Power light on back of Inspiron 518 is on but computer will not start by pushing start button on front panel.


Things to check !..
1st check the CPU fan to be functional cause its failure will lead to this behavior .
2nd check the ram memory ...If it has issues with the ram memory it may not boot at all ..or try to boot but only the fan will start and will make some warning beeps and go in a starting loop ..
3rd is a CPU failure..In this case the computer may start or not ..and in case it starts only the CPU will spin ..but nothing on screen .
In the last case check the wires from the source to the board ...the plugs to be well inserted and the source itself ..(measure ti with something ..or use it in another computer to see if ti is functional ..
Please rate my answer if it helps..have a good day !

Sep 19, 2011 | Dell Inspiron 518 Desktop Computer

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When pluged into outlet fans spins and doesnt stop, wont boot


Fan spinning hard is usually a CPU issue.
If you've made any hardware changes to your computer, undo them. This happened to me when I was trying to upgrade my Processor (CPU) and I had the wrong kind.

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My computer wont start


Does it have power coming in to your CPU? If none try to check the fuse at the back of the cPU on the power supply side.

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Cpu fan


It isn't detecting your fan as the fan may be dead or the sensor is dead. Both are not repairable but cheaply replaced and fixed with a new fan. The cost of the replacement cpu fan is not that much compared to a cpu. So don't try to make it last a bit longer by hitting the f1 to continue. That will catch up with you pretty quick.

If you want to double check you need to look at either the cmos setup section of a system monitoring software and check to see cpu fan speed and cpu temps. You may not see the speed but you should see the temps. If the temp is getting over 55-60 or more shut down and go get the fan. It's dead. If you see the rpms showing then you might have a motherboard problem.

However I would say you have a dead fan. Replacements are $5-15 and you need to just crack the case and pull the old one and put in the new one. You can take it to a tech but they will charge you to check it out again and then ti replace the fan and some shops will insist on new heat sink etc (those don't ever ever wear out or go bad at all)

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Screen is black. Hear computer trying to boot up.


cpu fan failure try to put a big fan where the comp vents and air flows! and see if its not shutting down!

Jul 01, 2009 | HP Pavilion dv5-1000us Notebook PC

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On my laptop the vent fan starts then stop and the power goes out


These machines have a terrible overheating problem! You will have to clean the fan opening and, put sylicon grease on the heat pipe and, heatsink that covers the cpu

Apr 04, 2009 | HP Pavilion dv9000z Notebook

1 Answer

Problem with the CPU cooling fan...!! :-(


Dear ARGHYA,
welll i can understand this, for this you can apply the Heatsink Grease between CPU and CPUFAN . it will help to reduce the CPU Temprature.


Cheerup

Mar 04, 2008 | Computers & Internet

1 Answer

Your CPU may have a problem


Have you removed all memory, other cards and unhooked all other drives to see if a short exists there? With a 300W PS some other component may be pulling too much that the CPU can't start so it tells you the problem is with the CPU or The CPU its refering to is on the video card? Good Luck, Tim

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