Computer will not turn on

Posted on 2007-10-01
Last Modified: 2008-01-09

A friend of mine has a PC that does not turn on at all.

Here are the details in her words:

"Someone uninstalled and then reinstalled all the applications due to a virus.  At that time, the computer was working fine.  All of a sudden the computer will not turn back on. The green light is flashing in the back of the CPU but that is all that is working.  The power supply has tested fine."

Here are the specs of the computer:

Compaq Presario
Model SR1030NX
Windows XP

Any advice would be appreciated.


Question by:baxleyb
    LVL 70

    Expert Comment

    Flashing green light sound like a NIC indicator. If nothing else happens check the power - is it switched on at the wall? Is there a switch at the rear of the PC.
    Check fuses. Open the box, any fans working?
    LVL 7

    Expert Comment

    If the fans don't turn on when you press the power button the power switch may be bad or may not be plugged into the motherboard securely.
    LVL 69

    Expert Comment

    Someone uninstalled and then reinstalled all the applications due to a virus<< oh dear lessons for that someone.

    I would  try opening her system into safemode with networking, tap F8 continously
     do you see anything at all when you turn it on?
    Not a problem with the monitor? Yellow light with monitor may indicate graphics card is not working.
    Start the computer in VGA mode from the safemode advanced options.Use her video card drivers cd or mainboard cd to install drivers,m  if she has a fauulty PCI card remove it.
    Any slaved hdd>> maybe faulty >> remove slaved hdd >> as it can prevent windows from booting.
    Check monitor test with another.

    do you have an xpcd? Her setup disc?
    Boot into safemode then try the last known good config that worked its like an advanced system restore you find it under the choose from list where you see safemode.
    otherwise choose the recovery console but set the bios to boot from xpcd first,
    once it loads and you get to the part which windows to choose  in this CMD prompt type chkdsk /r  press enter
    wait till it finishes completely.
    Then type in fixboot C: press enter
    REMOVE the xpcd now. change the boot order later to HDO first please.
    Then in the cmd prompt type exit press enter it will reboot
    but tap F8 continously as soon as you see the screen then choose last known good configuration that worked.
    it will set that back and reboot by itself hopefully into windows.
    Otherwise a repair re-install will fix it.
    This not recovery,  if you want those steps  for a repair install let me know.
    A repair re-install will damge the current profile files.
    LVL 69

    Expert Comment

    will not damage the current profiles should  state apologies mis typed oops.
    LVL 91

    Accepted Solution

    here my suggestions :
    1- the flashing green light indicates there is power to the motherboard
    2-PS can be dead, or any other device can be blocking the pc see 4-
    3->>   The power supply has tested fine  <<  how? was it replaced, or tested on another PC ?
    4- disconnect all devices and try to boot with only mobo + cpu + 1 ram stick, video card, PS  --> any display ? if NO, it is one of the connected, try other RAM, video card,¨PS - if these are ok - leaves only mobo or cpu
    5-for the reinstalling, was the PC moved? then it can be something came loose, check all connections, and if the cpu is properly seated

    Author Comment

    Hi Rindi,

    Please give the points to Nobus since the power supply was the cause of the problem.



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