Solved

Computer won't come on..

Posted on 2004-10-07
5
248 Views
Last Modified: 2010-04-26
My friend can't get his computer to come on. I opened the tower up and turned the power on in the back. I noticed a green light comes on, on the mother board. I figured that would exclude the power supply malfunctioning..? Everything inside looked fine.

When I press the power button in the front of the tower, at most the red light gives a little flicker if at all. None of the fans come on either.

Any ideas on what to look at?
0
Comment
Question by:nightzeus
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 69

Accepted Solution

by:
Callandor earned 90 total points
ID: 12250695
For generic trouble shooting, these are some things that can prevent bootup:
- motherboard shorting on case
- CMOS jumper set to CLEAR, instead of NORMAL position
- bad connections
- faulty or inadequate power supply
- bad RAM
- faulty video card
- bad cpu
- bad motherboard

If no one installed any hardware or opened the case recently, you can eliminate the first three (well, check the cables, in case something is loose).  Strip down the pc to the bare essentials: install one stick of RAM, the cpu, and the video card, and reset the BIOS.  Do not include hard disks, other PCI cards, or other peripherals.
0
 
LVL 28

Expert Comment

by:burrcm
ID: 12257247
The light on the mobo indicates that one rail is working. The other is probably dead (you need 5v and 12v). Try a different power supply.

Chris B
0
 
LVL 6

Expert Comment

by:wompey
ID: 12259698
Also make sure the voltage selection switch on the back of the power supply  is set correctly.  It's a simple error, but it once drove me nuts for over an hour.  
0
 
LVL 23

Expert Comment

by:Danny Child
ID: 12260007
some component in the system isn't functioning, and the system knows that, so it turns on for a microsecond, detects the fault, and powers off.  I've seen this where the cable to cdrom drives has been fitted the wrong way round.  
But, if you're following Callandor's (excellent, as ever) instructions, you'll find out which component it is.  
0
 
LVL 13

Expert Comment

by:compfixer101
ID: 12261557
once again follow callandor also i believe it maybe the PSU in my own opinion  light on board don't tell you much since a bad PSU could still have engnough power to make the light go on and stay on but not to doot the system
0

Featured Post

Space-Age Communications Transitions to DevOps

ViaSat, a global provider of satellite and wireless communications, securely connects businesses, governments, and organizations to the Internet. Learn how ViaSat’s Network Solutions Engineer, drove the transition from a traditional network support to a DevOps-centric model.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Article by: SHIELD1
The 5 R's 1. Repair 2. Restore 3. Reinstall 4. Remote admin 5. Run away OK so I'm not the most skilled engineer around but I definitely have an abundance of experience: electronic repairs since I was 13 and PC and computer hardware repair…
Like many organizations, your foray into cloud computing may have started with an ancillary or security service, like email spam and virus protection. For some, the first or second step into the cloud was moving email off-premise. For others, a clou…
In an interesting question (https://www.experts-exchange.com/questions/29008360/) here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…
Finding and deleting duplicate (picture) files can be a time consuming task. My wife and I, our three kids and their families all share one dilemma: Managing our pictures. Between desktops, laptops, phones, tablets, and cameras; over the last decade…

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question