Jump to content

Welcome to Geeks to Go - Register now for FREE

Geeks To Go is a helpful hub, where thousands of volunteer geeks quickly serve friendly answers and support. Check out the forums and get free advice from the experts. Register now to gain access to all of our features, it's FREE and only takes one minute. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more.

Create Account How it Works
Photo

CPU fan starts then stops after few seconds


  • Please log in to reply

#1
Cal3030

Cal3030

    New Member

  • Member
  • Pip
  • 2 posts
Hi! I have a 2 year old HP Pavilion P615y.
It has AMD Athlon x2 7550
8GB Memory, 750GB Hard Drive
Motherboard M2N78-LA (Violet)
NVIDIA GeForce 9100 integrated graphics
Windows Vista Home

After pressing power on button, power on light stays on, HDD light on solid, power supply led on solid(in rear of case), display blank.
The CPU and case fan start and then shut down after a few seconds. I've disconnect everything from the motherboard (HDD, DVD drive and RAM) with same results, also install all RAM modules individually, tried resetting CMOS by removing battery and setting jumper, the power supply is putting out 3.3, 5 and 12 volts.

Edited by Cal3030, 16 May 2011 - 07:35 AM.

  • 0

Advertisements


#2
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 19,993 posts
Hi Cal3030 :)
Possible causes include a bad PSU, overheating or a system short.

the power supply is putting out 3.3, 5 and 12 volts.

How did you establish this?
See Digeratis canned text regarding testing PSUs @ http://www.geekstogo...-a-psu-problem/
  • 0

#3
Cal3030

Cal3030

    New Member

  • Topic Starter
  • Member
  • Pip
  • 2 posts
I Check the voltage at the MOB/PwrSup connector with DMM.
  • 0

#4
phillpower2

phillpower2

    Tech Staff

  • Technician
  • 19,993 posts

Digerati states To properly and conclusively test a power supply unit (PSU), it must be tested under various realistic "loads" then analyzed for excessive ripple and other anomalies. This is done by a qualified technician using an oscilloscope or power analyzer - sophisticated (and expensive) electronic test equipment requiring special training to operate, and a basic knowledge of electronics theory to understand the results. Therefore, conclusively testing a power supply is done in properly equipped electronic repair facilities.

When the computer is doing nothing more than sitting at the desktop the PSU is not being stressed in any way, start multi tasking, gaming or using demanding 3D software and a flaky PSU will become even more unstable.
Trying a known good PSU is a priority, especially if you have the stock HP type as brand names tend to use minimum power and quality units to keep costs down, what is the brand and output of your PSU?
  • 0






Similar Topics

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

As Featured On:

Microsoft Yahoo BBC MSN PC Magazine Washington Post HP