Question about Dell Dimension 2350 PC Desktop

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In booting my cpu fan reads ''o'', what is this preoblem?

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Well ther can only 2things happen here Either ur Fan has gone Bad or ther is a Fault in the sensor .This review is given on Default Issue.

Things u can Do 1 is ur system getting hang or free wen u r using it and u have to restart it .then as i said ur fan is not Working thats the reason it Shows .0 to check this open the Tower and run ur system by this u will come to knw that is it working or not|If its working it might be a Senson issue.

to have more Clarification on this U can Check ur fan speed on BIOS.


Posted on May 09, 2009

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Your cpu fan is probably plugged into the wrong slot on your motherboard or your sensor is broken. 1 of the 2...

Posted on May 09, 2009

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1 Answer

Won't start but CPU fan vibrates but will not go full blast. Intermittant


It appears you have a faulty CPU fan and it is causing the CPU to overheat and shut down.
I suggest you replace the CPU fan. remove any dust from the heatsink and put new heatsink compound on the CPU/heatsink.

May 06, 2012 | Compaq Presario S5000NX PC Desktop

1 Answer

Pc not booting


If you hear the CPU fan turn on that doesn't mean the CPU itself is working. It can be only that the motherboard is getting power. Check all your connections such as monitor and peripherals and re-connect them. If you still don't get P.O.S.T. or ANY letters or boot options on your screen then your CPU is dead. (unless your monitor is bad)
Another easy diagnostic is using your ears. For example the pitch sound of the fan in some motherboards tends to lower and then increase because it's reading of the hard drive. This means your CPU is ok but either your graphics connection is bad or your monitor is.

Apr 22, 2012 | Intel Motherboard

1 Answer

HP P4SD, its running good with 4 gb RAM, P4 3.0ghz, and a couple sata hd. The problem is the fan output voltage, i havent been able to read the output chassis and cpu cooler pins voltage cause i can find...


"i can find my dmm?" did you mean CAN'T?
"its clearly off", what is off?
the fans are 3 pins,2 are power, one is RPM tachometer.
"it all works fine", so you can boot and run any OS, ?

"the voltage reads +12vdc", where, at fan or PSU?
the fans run off 12vdc, they are DC motors (from outside fan)
if the fan runs slow at 12vdc the the fan is bad or is a low RPM
fan, as some are, bigger fans run slow, for less noise.!

first is the CPU fan it must run full speed, if not the CPU will overheat in seconds and ALL CPU shut them selves (by there selves) this way. so CPU fan is first. what does it do... there....?

then BIOS screens. GOT BIOS UP? and running? with, ESC key pressed>.
let me guess your symptoms
1: PC dead. will not boot.
2: BIOS dead.
3: all fans DEAD,.
4: power switch works and all PSU voltages read right, (seems not)/?
5: if the PSU power wire reads right(DMM), matching the side sticker voltages, and the CPU is dead, the MOBO is dead, or CPU is toasted.


here is a modern PSU, sticker.
see 5 to 10 power lines, see them. all must read correctly
if a fan is dead, then its dead if 12vdc is present on the fan power pins.




psu-dsqaqngzuibs2svxh2bga4t0-2-0.jpg

Apr 28, 2017 | HP Asus Motherboard P4SD-LA Socket 478...

1 Answer

Ok. I have a 8S661X-RH and there is no boot ! HD is ok , memory is OK and there is no SYS fan instaled ,Can you help me?


windows is not booting high Temp.
problem with Cpu fan chaque proccessor fan it running or not. if it running refix the cpu fan . Clene & peste apply on it . it Reduce the temparatur of machine window Able to start booting, if Same issue than replace the cpu Fan,

Jan 24, 2010 | HP Compaq Motherboard

2 Answers

Fails to boot, fans and lights on, no bios or anything


My recommendations would be to remove all connections to the board.
Remove the CMOS battery.
Remove the CPU fan and CPU.
Look at the top of the CPU, if you have a crust over the top of the CPU, you will need to remove it to a clean surface.
Next, your CPU fan should be a 3 wire connection on the motherboard, within two inchs of the CPU holder.
After cleaning the CPU, re-inseart and apply a heat sink lub for good heat transfer.
Re-install CPU fan and plug in to board connection.
Re-install your CMOS battery and power up unit.

With the CMOS battery removed, the time and date will need to be reset.
Also, in the BIOS for that board, you should be able to see temps. and rpm readings. ??
Hope the CPU has not taken a dump on you.!
Before you plug in the drives and other devices, check temps. rpm and voltages.
Have fun, hope this has helped you.

Oct 06, 2009 | ASUS P5GD1-VM Motherboard

1 Answer

My sony vgc-rb40 will not boot bios with cpu fan connected


mostly all fans are 12V DC try connecting all the fans directly to SMPS of the system i.e the red and the black wire

Sep 16, 2009 | Sony VAIO VGC-RB40 PC Desktop

1 Answer

Dell dimension 2350 cpu fan failure


i can help with the mouse & keyboard.
go into the bios on boot screen you press DEL i think then activate the USB mouse & keyboard option then save & exit.
there will be settings for the cpu fan in there somewhere but i can't remember where sorry.

Aug 16, 2009 | Dell Dimension 2350 PC Desktop

1 Answer

Boot up problem: No Bios reading


Try to unplug unnecessary hardware.. just plug in the monitor to video card, power, and the memory.. unplug the IDE cable or SATA and also the USB devices... Observe if your system will boot. sometimes hardware damages prevent your system to boot..

Mar 27, 2008 | EliteGroup 741GX-M Motherboard

2 Answers

System fan


you may have less fans than possible readings. That 0 rpm fan may be absent and so it is not the problem.

Jan 09, 2008 | HP Pavilion a305w (DM181AR) PC Desktop

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