Question about HP Compaq Business d530 Ultra-Slim PC Desktop

2 Answers

Usb power issues

My 530 boots up sometimes and when a usb device is attached the screen goes black. Holding the power button shuts the system down but when it is pressed again the green light comes on for as long as the button is pressed but goes out when the button is released anmd the PC won't boot.

any help appreciated

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  • jinxleprecha Nov 01, 2008

    Thank's bubbabear - I admit that when the usb device is removed it will boot ok - but sometimes when i reconnect the usb ( usuallly external hdd) the screen goes black - the fans are running but as I can't see the screen I don't know whats happening - no error beeps though.



    I have disconnected the front usb sockets from the motherboard and this seems to have helped but I still get the odd blank screen when I connect the external hdd - although I now get the front usb disconnected error on bootup which requires an f1 acknowledgement. I have tried another front usb socket with the same result so i left it disconnected.



    Still not convinced my problems are gone but it looks like it may be usb o rpower related??





    any ideas appreciated

  • jinxleprecha Nov 01, 2008

    I have discovered that leaving the front usb ports unplugged from the MB eliminates the reluctant startup issues. A maxtor mains powered external usb HDD seems to work ok but a 2.5" external usb powered HDD brings on the black screen trip.



    Also if I leave the Maxtor plugged in I get a shutdown hangup too. This may be pointing to a usb bus problem. I have done an auto update of all drivers especially the chipset which I believe are tied in with the usb in some way but no improvement.



    Regards

  • jinxleprecha Nov 10, 2008

    Thank's for the advice guys,



    I followed on from he previous threads and I decided to persue power supply as a cause of the problem and .....hey presto changing out the PS solved the problem - all ok now .



    Thank's for all asstance given.



    Michael

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2 Answers

We had a simular problem. Turns out the power supply switch was set to 230 volt and our input supply was only 120. I changes the power supply switch to 115 volt and that fixed our problem.

Posted on Nov 09, 2008

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  • HP Master
  • 2,794 Answers

Some systems will try to boot up on a usb device such as an IPod or a external hard drive.

It should be unplugged to get it to boot properly.

Posted on Oct 31, 2008

  • Tim Babcock
    Tim Babcock Nov 01, 2008

    What type of USB device is it?

  • Tim Babcock
    Tim Babcock Nov 01, 2008

    You might want to look into getting a new usb card as well. The apply more power to external hard drives.
     

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