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Honor Student
Posts: 3
Member Since: ‎06-28-2010
Message 1 of 5 (2,843 Views)

Computer won't turn on after cleaning fan

My computer ( Hp Pavillon s3137c)  was overheating so I cleaned it. Since it is a compact desktop I had to remove the fan assembly from the computer to clean it.  It is the fan and radiator on top of the cpu type.  After everything is cleaned I screw the fan assembly back in and now the computer won't start!  The light turns on, the fan starts turning and a second later everything shuts down.  Can someone help me?

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Provost
Posts: 26,608
Member Since: ‎07-17-2009
Message 2 of 5 (2,839 Views)

Re: Computer won't turn on after cleaning fan

Did you clean off the old thermal paste from the top of the processor and heat sink and apply new thermal paste? This is probably not the reason but it should have been done.

 

Try this procedure:

Unplug the PC and open it up.  Carefully remove and replace all the cables going to the motherboard one at a time. Do the same for the memory dimms and the video and sound cards if you have any. Plug your PC back in a give it a go.

 

Do you hear any beeps?

HP laptop 17t u100,
HP Photosmart 6520 and HP Deskjet 1112
Custom 1151 socket Z270 Intel i7-7700k @4,600 Mhz, 16GB Corsair 3000 Mhz dimms
Corsair H75 water cooler, Corsair CS 650M power supply
RAID 0 (dual Samsung 960 EVO m.2 240GB) boot system
Dual Samsung 840 EVO SSDs 500GB data storage, Intel 750 PCIe SSD 400GB
MSI NVIDIA GTX 980TI 6GB
ASUS ROG PG279q @144 MHz
Windows 10 and Windows 8.1 Pro x64 in UEFI mode
Honor Student
Posts: 3
Member Since: ‎06-28-2010
Message 3 of 5 (2,819 Views)

Re: Computer won't turn on after cleaning fan

Thermal paste?  I guess I'm out of date with today's computer.  I'll buy some and use it.  Could the fact that I didn't put any thermal paste back on be the cause of my computer not starting?  Thanks for the tip, I'll let you know if the problem is solved.

Honor Student
Posts: 3
Member Since: ‎06-28-2010
Message 4 of 5 (2,807 Views)

Re: Computer won't turn on after cleaning fan

I did the procedure as you said.  Turns out that if I hold the power supply cables going to the motherboard a certain way the computer works fine but as soon as I let go of them it turns off.  I don't know how to fix that problem myself but at least I know where the problem is now.  Thanks for the help.

Provost
Posts: 26,608
Member Since: ‎07-17-2009
Message 5 of 5 (2,805 Views)

Re: Computer won't turn on after cleaning fan

It might be a loose or bad connector and possibly a connection issue inside of the power supply.  Try just holding or moving one cable at a time until you find the issue.

HP laptop 17t u100,
HP Photosmart 6520 and HP Deskjet 1112
Custom 1151 socket Z270 Intel i7-7700k @4,600 Mhz, 16GB Corsair 3000 Mhz dimms
Corsair H75 water cooler, Corsair CS 650M power supply
RAID 0 (dual Samsung 960 EVO m.2 240GB) boot system
Dual Samsung 840 EVO SSDs 500GB data storage, Intel 750 PCIe SSD 400GB
MSI NVIDIA GTX 980TI 6GB
ASUS ROG PG279q @144 MHz
Windows 10 and Windows 8.1 Pro x64 in UEFI mode
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