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System not power up, cpu fan is running

Last answer on Dec 28, 2009 8:53:58 pm GMT rajan, on Nov 24, 2008 10:54:57 am GMT 
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Hi,

yesterday my PC shuts down automatically and it fails to power up, but the smps & processor fan is running, no other LEDs, no signal nothing. what will be the cause... how can i handle this prob..?

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1

xpcman, on Nov 24, 2008 6:47:11 pm GMT

Take it to a repair shop. There are endless reasons why it doesn't work.

   
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3

elric1, on Feb 1, 2009 1:41:58 pm GMT
  • +5

Haveing the same problem cpu fan starts running when u plug up the power but no lights just cpu fan running let me know if u have found the problem thnks

   
Reply to elric1

4

rajan, on Feb 4, 2009 10:29:48 am GMT

I changed the mother board. that may be the problem. now it's ok. but u may ask some experts help. im not that much experienced. my sys engg told me to change the Mboard. so i did. but, now it's working

   
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5

KevDMD, on Jun 18, 2009 11:02:35 pm BST
  • +10

Had the same problem with an HP Pavilion PC. Called tech support and they resolved the issue. They had me unplug everything to the machine, including the power cable. Then, I had to hold down the power button for 30 seconds. Apparently, this drains all power that is stored and rests something. I thought the guy was just following his checklist, but you can imagine how surprised I was when my computer booted up.

   
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9

Cur, on Dec 24, 2009 8:26:55 pm GMT

Thank you KevDMD! Worked for my Gateway GM5474 too.

It abrupty died when we were watcing a program on media center and would not come back when the power button was pressed It was behaving very erratically, not even showing the BIOS spash screen most times. Reseating the cards, memory, unplugging the HDD and trying to boot off the CD, etc. did not help.

Resetting the motherboard coaxed it to go all the way to loading the OS and while doing so it again crashed. This indicated that the CPU may be overheating.

Took apart the cooling block mounted on top of the CPU, cleaned the old thermally conductive grease off and added a new layer of grease, replaced cooling block on CPU, reset the motherboard again per KevDMD. This time it started up and let me go through the BIOS and set up a warning for high CPU temp.

Vista started up, but did not load all the way through. Did a system restore and it now seems fine.

Merry Christmas!

   
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10

 Tom21, on Dec 28, 2009 8:53:58 pm GMT

Hi
I'm having the same issue but it did not resolve the problem after I hold the button for 30 sec., so what I should do?

   
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6

Jeff, on Aug 5, 2009 5:05:11 am BST
  • +1

Thank you KEVDMD (above) for your thoughtful consideration in writing your post.

I was installing new memory (in Gateway PC) and thought the computer was shut down when it was actually in hibernation mode. I shut down when I was done and couldn't boot back up. Fan's were running and power was on, but nothing else.

Based on a few Google searches and subsequent forum discussions I came to the conclusion that I needed to reset the motherboard/bios via the pull battery method.

UNTIL I read kevdmd's post above.

Instead, I decided to pull the power chord in the back and drain all juice to the motherboard. After, I booted up and heard 3 beeps. Now i'm getting somewhere! I shut down again and ...VOILA! I couldn't be happier to hear Vista's startup theme!

Hope this helps anyone else with the same issue.

Cheers!

   
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7

unatttached, on Aug 9, 2009 5:36:24 am BST
  • +2

Worked!!! Thought it was motherboard, happened once before and I had motherboard replaced. Thank you! 30 seconds and all better now.

   
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8

Christoffer, on Nov 21, 2009 8:01:31 pm GMT

Hello! I am also having problems with my Laptop, which is a ASUS M51S. First when I got this problem, that the laptop wouldnt start up, and the lights were there for a few quickly seconds, I was trying abit on my own. Took out the battery and power supply, and inplugged both of them again to try if it worked. Sometimes it did, but most of the time it didnt work. When I saw this topic, I followed the instructions, and after a few tries it worked. Im too afraid to not getting my laptop to start again, so last time I have putted my laptop to "rest-mode". Im sitting here trying to start up the computer now, and I can't get it to start, and I've tried many times. Is there any other ways to start it up? What can be wrong? I dont really have any money at the moment, and Im addicent to my laptop, and using it lot each day, so I do not want to went any money on new computer or repair (unless its the only way).
Please, I need help!

   
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