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Computer only briefly spins PU fan then nothing.

Trying to fix friends desktop. The specifics on CPU: MB=K7S5A ver. 3.1. Install components: 2 sticks of PC 133 Ram consisting each of 256 MB of Ram. AMD Duron Processor, and Rage Pro Video Card. Thats it. I plugs up the pwr supply, press the pwr button and all I can get is 5 seconds of the CPU fan 2 spin and then nothing. I am baffeled. Can anywon help?

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Reset your bios put the cmos cell for 15 minutes then refix it.
also check RAM.

Posted on Nov 01, 2008

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When i turn the power on, 3 beeps play, the fan runs and the power light comes on, but nothing else


Hearing ONE beep is normal, and a signal that the computer hardware is OK.

Hearing THREE beeps is a signal that something is wrong:
* burnt-out CPU,
* one of the fans is not spinning (clogged?) or spinning too slowly (about to seize-up),
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If there is more than one RAM stick, remove all but one stick, and start it up, to see if it starts.

Check that the fans are spinning freely.

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I have a computer that would do nothing when turned on, including giving no beep codes. Everything seems to be getting power - the CD drive, CPU fan, and hard drive all start spinning. I disconnected...


One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

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hope this helps

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Computer keeps shutting down on its own.


This is a difficult problem because I cannot determine the exact cause because of limited information.
This problem will need to be solved by trying one thing at a time.
Do not do all these together.
1. Reseat the RAM.
2. Remove the RAM and get it tested at your friendly computer store.
3. Reseat the hard disk
4. Run a virus scanning program on your computer/laptop
5. Check the fan to see if it spins freely, if not replace the fan
6. Loosen the dust from the fan and heat-sink assembly and remove/vacuum the dust.
7. Try removing the heat-sink, remove the old heat-sink compound and apply a new coating of heat-sink compound to the CPU and re-attach the heat-sink to the CPU.
8. Do a system repair with the Windows installation CD
9. If nothing works then re-install Windows, plus the laptop's device drivers and your programs.
You may need assistance from a computer savy friend to help you. Let me know how things work out.

Feb 04, 2010 | Computers & Internet

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Not powering on at all - I have been built a new computer from scratch with all brand new components. After hooking all of them up and plugging in the power source. Nothing is happening when the power...


1. Could be as simple as not having the Power Switch on the right jumper...double check.
2. The board will power up with nothing hooked to it... just power, CPU, MEM... disconect everything to just to get the board up to the bios.
3. Make sure PS is securly connected to the MB.
4. Check Jumper on the Board to make sure the Test Jumpers are not set
5. Memory is seated correctly... if you pull them out the board will start and beep...

Dec 31, 2009 | Gigabyte GA-G41M-ES2L Motherboard

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

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S-ATA Hard Disk not detect


hi Dear,

You have to update your BIOS. If you have intel mother board just go thought their website and download BIOS Flash utility of your particular Board and Update BIOS.

The above fix will surely solved your problem.I had same problem as you and it's now fixed.

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Carpencote, Fedarcyks is back, and ready to try again.....


Do not just check conductivity as some fans are speed controlled and you may have a sensor problem. see this wikipedia entry explaining various modern speed detection methods: http://en.wikipedia.org/wiki/Computer_fan#Physical_characteristics

May 14, 2008 | Dell Dimension 4600 PC Desktop

1 Answer

Carpenocte, Fedarcyks is back; we were disconnected last week; have tried new things....


well, if the powersupply whent, then everything is gone and you may need another fan. tis' the way of the powersupply. just try gettin g a new fan! now, does the computer start to boot when you try to turn it on with the fan not working? if it does, then that's good. if it doesn't, then try replacing the power switches in the case(or checking them first at least). hope that helps!

May 14, 2008 | Dell Dimension 4600 PC Desktop

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