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PSU problem. Power on, fans spin then stop. 15 secs pass fans try to spin then stop and so-on ?

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  • markus
    markus May 11, 2010

    try clean the psu cooler



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Hope your system is running and only the fan is not running. in that case fan needs replacement. only the fan can be replaced. good luck

Posted on Dec 18, 2008


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Hp P6000 fans stop after 15 seconds. Hard drive light stays on. nothing on monitor

dead PC, DESKTOP PC ,as old as 2009.
the fans tells you the PSU shut off, for cause.
fans, so you saw all fans turn off or just 1. or 2 of 3.
my pc has 4 fans many have 3;
CPU fan stops ,cpu overheats , PC goes slow or dead. clean the lint off it.
GPU fan , video goes dead. if it overheats.
PSU fan is inside the PSU if it goes bad, PSU is bad.
no monitor stated, is it CRT or LCD is it 15 years old.
if the monitor is 2002 or newer the OSD screen works
even with PC turned off, press the select button see that OSD screen ? telling you the monitor is not dead in 1second flat;
i caN NOT understand why the HDD lamp glows,
if the PSU shuts off , most LEDs go dead, on my PC
the standby LED on the MOBO glows, unless you pull the PSU power cord.
your HP PC came with 9 different mobo, during its production run.
at least. so answers come harder from that reason.

here are some simple tests.
test 1
power on, hear fans run
does the DVD drive (or cd) button eject work,.?
do all fans not just 1 or 2 worK? look for all fans clean the lent out
or things will overheat,
PSU can be bench tested or in the PC case.
using a jumper wire, even the HP service manual covers that.

power on the PC (after keeping monitor on for 5 full minutes)
test 2
the Screen must say, "hit ESC key to enter HP setup" BIOS.
press the ESC key on the monitor
if no text shows up that is a dead PC< "text above missing{"
if the PC told you to hit another key do so.
The ESC key , activates the BIOS brain. this cause
all those pages to work as seen in your service manual;.
if BIOS is dead that is a bad PSU (monitor ok)
or CPU is overheated.
bad ram, take all sticks out and test 1 by 1, ask how. !
The PSU will shut down on up to 12 or more faults
but never shuts down the standby power bus. unless AC line pulled.
IF the PSU has fan as most do this is the first place I look.

try this guide

Jul 08, 2017 | HP Computers & Internet

1 Answer

Pc not booting, no fans spinning, nothing lights up. HALP


Dec 06, 2013 | Computers & Internet

1 Answer

My computer starts and then automatically stops after a clicking or ticking sound all my power cables will work but nothing appears on the screen and my fan stops working?help me out please?

I m no expert but it sounds like you need a new motherboard or at least your PSU. I had a similar problem and used the opportunity to have my techo genius up grade the mother board and a fresh PSU and upgraded to windows7 and everything works like a dream and much more power!!!!!

Jan 15, 2012 | Intel Computers & Internet

2 Answers

PC doesn't boot up.

Use jumper to reset cmos. Test or replace cmos battery.Unplug evthing( HDD,CD,DVD,FLoppy) try to start barebone. Test voltage from power supply to motherboard. Try different ram. Good Luck.

Nov 21, 2009 | EliteGroup Lga 775 GF7100PVT-M3/MCP73T-M3...

1 Answer

Connecting my PSU to my Motherboard

The bare essentials to start a computer are PSU, Motherboard, CPU, RAM and Video.

Its possible the PSU arrived DOA. Though I've only had 2 DOA PSU's in the 15 years I've been building custom computers.

Hope this helps.

May 21, 2009 | ASUS P5QC Motherboard - Intel P45, Socket...

1 Answer


CPU Should work with board.Try removing cpu and replace in socket check for bent pins if all is well..reinstall.make sure to use pad or silver paste and reinstall fan.rebootRichardm69

May 05, 2009 | ASUS Computers & Internet

2 Answers

Asrock P4i65G Motherboard

If the CPU is dead the problems can be
  1. no power
  2. no fans etc or
  3. power, no beeps (errors)
If the Ram is not compatible it would be constant beeping.

With the board in, and power supply 20pin + 4pin Pent 4 power attached,(#2 and #7 of motherboard layout) remove power cord from power supply.
CLRCMOS0 allows you to clear the data in CMOS. The data in CMOS includes
system setup information such as system password, date, time, and system
setup parameters. To clear and reset the system parameters to default setup,
please turn off the computer and unplug the power cord from the power
supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on
CLRCMOS0 for 5 seconds. Remove the jumper. Remove heatsink and fan from CPU. disconnect cpu and reseat it. Re-install heatsink and fan. Plug in the power cord. Try to boot up. If it still does not boot and (no power, no fans etc.) problem would then be cpu is fried.

Jun 02, 2008 | Computers & Internet

1 Answer

Acer desktop fails to boot

a definet short on the motherboard. keep your cpu and cmos battery and break the board

Dec 30, 2007 | Acer Aspire SA20 PC Desktop

1 Answer


possible cause: 1.low supply of voltage try checking your Power Supply Unit(PSU). try to swap with a different good PSU. 2.Defective/burned Motherboard, check for any bloated Capacitors or burned chips...

Sep 09, 2007 | Biostar M7VIG-400 (M7VIG 400-COMBO4)...

1 Answer

Failure on powerup?

I suspect that your PSU is faulty... can you buy another one? This is a fairly typical of a "Blown PSU" symptom to me... I would try replacing the PSU, and then connect ONLY the Motherboard, if OK, then Hard Drive, if OK then .. and so on.. I advise this as it MAY be something connected to the PSU that caused it to "Fault" but generally they just go Toes Up for no real reason.. other than PSU component failure.

Jul 30, 2007 | EliteGroup 741GX-M Motherboard

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