monitor going to sleep

Discussion in 'Windows Vista Performance' started by emanddd, Dec 21, 2008.

  1. emanddd

    emanddd Guest

    my kids have a Compaq running vista home basic. we have had this
    computer for over a year but has not been connected to the internet
    until two weeks ago. now the monitor went to sleep and we can't wake it.
    there are no lights on the keyboard and we get no response at all. i
    have read all kids of posts about this problem but most involve changing
    settings or updating drivers, we can't do any of that because i can't
    get any response. any help would be greatly appreciated. thanks
     
    emanddd, Dec 21, 2008
    #1
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  2. Do the LEDs light up on the front panel of the tower?

    Can you hear a 'beep' sound as it boots from cold?

    Can you detect any airflow from the power supply fan?

    Can you hear any fans at all?


    --
    Mike Hall - MVP
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    Mike Hall - MVP, Dec 21, 2008
    #2
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  3. emanddd

    emanddd Guest

    thanks for the replies. it does power up, there are two fans that ru
    and a few LED's on the back that light up. the power button on the fron
    did light up but not anymore. It will shut down if i hold the powe
    button down for a few seconds and then i push the power button i ca
    hear the fans turn on but no beep
     
    emanddd, Dec 21, 2008
    #3
  4. emanddd

    Malke Guest

    You have hardware failure. Failing components could be the power supply, the
    hard drive, the motherboard. There's no way for anyone who can't see the
    machine to tell. If the machine is still under warranty, contact HP's tech
    support for repair/replacement. Otherwise take it to a qualified computer
    professional. I don't recommend using a BigComputerStore/GeekSquad type of
    place.

    Malke
     
    Malke, Dec 21, 2008
    #4
  5. To "emanddd": it's not your hard drive. Your system isn't even
    entering the POST and a dead hard drive woudln't cause that.

    It could be the power supply, the CPU or the motherboard.

    Richie Hardwick
     
    Richie Hardwick, Dec 21, 2008
    #5
  6. emanddd

    emanddd Guest

    -i was hoping it would be something easier to fix myself. thanks for all
    the help-
     
    emanddd, Dec 21, 2008
    #6
  7. emanddd

    emanddd Guest

    If the light on the back of the power supply lights up does that mean
    the power supply is good? how do I test the motherboard and find what
    motherboard i need? is there a way to look it up online, i have a compaq
    sr5214x. thanks
     
    emanddd, Dec 21, 2008
    #7
  8. Not necessarily, but it's better than it NOT lighting up. Does the PS
    fan run?
    You're over your head on this, I'm sure of it. Besides, Compaq boards
    are proprietary and not easily replaced.

    You need to find a local "ma & pa" computer shop and have them check
    the power supply and the CPU to determine if those are OK. If they
    are, then it's the mobo. Such work is usually billed by the hour and
    could run a couple hundred bucks coming out of the chute just to check
    everything.

    Richie Hardwick
     
    Richie Hardwick, Dec 21, 2008
    #8
  9. emanddd

    Rick Rogers Guest

    Hi,

    No, it means it's receiving power. Whether or not it is delivering the
    correct voltage and current to the motherboard requires testing by a
    voltmeter or PSU testing tool.
    No way to look it up online. Diagnostics are done in person by a qualified
    technician with the appropriate tools. Also, Compaq is the pc maker, but not
    the motherboard manufacturer. They put the components together, but the
    actual manufacturer of each will vary depending on their contracts and
    availability. Check their online documentation for your model, as it may
    reveal who the motherboard manufacturer actually is.
     
    Rick Rogers, Dec 21, 2008
    #9
  10. emanddd

    emanddd Guest

    sounds cheaper to buy a new one, less than $350
     
    emanddd, Dec 21, 2008
    #10
  11. Not to mention that the new one will have more power, probably more
    RAM, etc.

    You can pull the hard drive from the old one and either install it as
    a slave in the new one, or buy a USB enclosure for it and use it as an
    external drive for extra storage or for keeping backups.

    Richie Hardwick
     
    Richie Hardwick, Dec 21, 2008
    #11

  12. It is not the most precise of tests, but the brightness of the LED on the
    front panel is an indication that the PS is not delivering too well..


    --
    Mike Hall - MVP
    How to construct a good post..
    http://dts-l.com/goodpost.htm
    How to use the Microsoft Product Support Newsgroups..
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    Mike's Window - My Blog..
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    Mike Hall - MVP, Dec 22, 2008
    #12
  13. emanddd

    Chuck Guest

    The first thing to do is to disconnect the monitor cable from the P/C with
    power to the monitor and P/C OFF!
    Then apply power to the monitor Only, with the interface cable from the
    monitor to the P/C disconnected (usually at the P/C.)

    Most working monitors will show some sign of activity, and may display
    something that basically indicates that the monitor is not getting an input
    signal. You may be able to enter a setup mode that displays information
    concerning the current monitor settings from a button on the monitor control
    panel.

    (Divide and Conquer!)
     
    Chuck, Dec 22, 2008
    #13
  14. emanddd

    Chuck Guest

    And, depending upon the P/C, flickering may indicate HD activity. Without
    knowing what was typical for a particuliar P/C before it started to have
    problems, light indications are not too useful.
     
    Chuck, Dec 22, 2008
    #14
  15. emanddd

    MGJ Guest

    I have the same problem periodically with a year old HP Media Center PC; I
    can't
    find a pattern except perhaps that the computer sometimes loses connection
    with the wireless keyboard and mouse so moving the mouse fails to wake up
    the computer.

    It seems to relate to certain programs, such as Windows Mail, left open when
    Windows goes to sleep.

    In my case, it is not the monitor which you can check by turning it on and
    off - you should get a brief manufacturer's or other power on message.

    I wouldn't be too quick to replace the computer, just double check the
    "power" settings and close programs down before going away from it for a
    while - that solved my problem.
     
    MGJ, Dec 22, 2008
    #15

  16. I wasn't talking about flickering at all. Over the years, I have noticed
    that failing power supplies struggle to maintain brightness of the power
    LED..


    --
    Mike Hall - MVP
    How to construct a good post..
    http://dts-l.com/goodpost.htm
    How to use the Microsoft Product Support Newsgroups..
    http://support.microsoft.com/default.aspx?pr=newswhelp&style=toc
    Mike's Window - My Blog..
    http://msmvps.com/blogs/mikehall/default.aspx
     
    Mike Hall - MVP, Dec 22, 2008
    #16
  17. emanddd

    emanddd Guest

    when i turn just the monitor on a box comes up that says "no input
    signal" then a different box comes up and says "monitor going to sleep"
    then the screen goes black
     
    emanddd, Dec 22, 2008
    #17

  18. They all do that. It shows that there is no video output from the tower..

    You need to try a different power supply first as that is the cheapest
    option..

    If there is still no life in the machine, you are looking to replace
    expensive bits..


    --
    Mike Hall - MVP
    How to construct a good post..
    http://dts-l.com/goodpost.htm
    How to use the Microsoft Product Support Newsgroups..
    http://support.microsoft.com/default.aspx?pr=newswhelp&style=toc
    Mike's Window - My Blog..
    http://msmvps.com/blogs/mikehall/default.aspx
     
    Mike Hall - MVP, Dec 22, 2008
    #18
  19. I don't know if matters have changed over the years but not that many
    years ago it was practically impossible to find a replacement power
    supply for a Compaq machine. Nothing available in the normal market
    would fit in the box.

    Richie Hardwick
     
    Richie Hardwick, Dec 22, 2008
    #19

  20. Yes, a case change may be required as well..


    --
    Mike Hall - MVP
    How to construct a good post..
    http://dts-l.com/goodpost.htm
    How to use the Microsoft Product Support Newsgroups..
    http://support.microsoft.com/default.aspx?pr=newswhelp&style=toc
    Mike's Window - My Blog..
    http://msmvps.com/blogs/mikehall/default.aspx
     
    Mike Hall - MVP, Dec 23, 2008
    #20
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