sporadic start up

Posted on 2007-08-04
Last Modified: 2013-11-05
Have a system that will only start up occasionally, runs great when it comes on. Owner just will not shut it down once he gets it going. According to owner system is overhauled, had a new motherboard and processor and case a year ago. Hard drive failed recently, that is where I came in. Replaced the hard drive and added a genuine  Windows XP home. They had a "bootleged" windows xp before. Only 128 mb of memory and a 300w power supply. Could this be the power supply, memory or both. Bios has no beep codes. Suggestions?
Question by:bitsbytes06
    LVL 28

    Expert Comment

    Most likely a failing power supply. Check the voltages in the bios pchealth page if there is one, although it can look OK. Try disconnectiong CD/DVD and any additional equipment temporarily to reduce the load, case fan etc (not CPU fan). If this makes it start more reliably, then PSU is at the top of the list.

    Chris B
    LVL 13

    Expert Comment

    Most "300W" power supplies are crap.  Check the make/model of the psu, and check reviews or ask us if it's good quality or not.  Also, if the guy had this 'overhauled' a year ago, and got a new motherboard/processor/case and ONLY 128Mb of RAM, I'd guess all the parts are suspect...  Might be the cheapest upgrades possible...

    Re: disconnecting devices... it's possible to use that method to troubleshoot, but not necessarily accurate as it really depends on whether the devices are powered by the same voltage rails as the mobo...  All psu's provide different voltages to different devices on 3.3v rails, 5v rails, 12v rails, etc...    
    LVL 38

    Expert Comment

    More information would help.
    What is the make and model of the computer? Is there a service tag? Is it stock or comprised of various components?

    If not already done, go into BIOS and elect to have the RAM tested and displayed during the POST.
    LVL 91

    Accepted Solution

    >>  Could this be the power supply  <<   calculate what you need here :      
    >>   memory   <<  test it with memtest86+ from

    Author Comment

    Thanks for the help Power Supply was the problem. Still sugesting to the owner that they need to increase the RAM.
    LVL 91

    Expert Comment

    more ram is always the best option to speed up a pc

    Featured Post

    Enabling OSINT in Activity Based Intelligence

    Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

    Join & Write a Comment

    I use more than 1 computer in my office for various reasons. Multiple keyboards and mice take up more than just extra space, they make working a little more complicated. Using one mouse and keyboard for all of my computers makes life easier. This co…
    This is about my first experience with programming Arduino.
    The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…
    The viewer will learn how to successfully download and install the SARDU utility on Windows 7, without downloading adware.

    755 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

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now