Question about HP Compaq Presario SR1350NX (PP196AA#ABA) PC Desktop

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PC will not power up

I have a COMPAQ SR1350NX desktop. I shut it down to move the unit from a table to my desk. Will not power up. LED light on PSU blinks. Can hear clicking noise from PSU. Followed HP help and have disconnected everything from PSU and LED is on steady. When I plug in 24 pin to MB, LED blinks. Also noticed green blinking LED on network connector. Disconnected everything from MB and still blinks when 24 pin plugged in. Has MB somehow gone bad?

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  • ag74rec Mar 01, 2009

    I even removed each RAM to eliminate them. Video part of MB. The blinking/clicking dies out after the power plug is disconnected.

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  • Master
  • 447 Answers

Check that the ram memory hasn't come unseated from the mobo. If you are using an above board video card also check that it is properly seated as well.

The clicking noise from the PSU is kinda perplexing though...

Posted on Mar 01, 2009

  • John Elliott
    John Elliott Mar 01, 2009

    If you want to rule out the power supply as the problem you can pick up a 300-400w power supply (with a 20+4 or 24 pin connector) and test it. Many of the Compaqs use proprietary PSUs so a generic power supply may not be mountable in your unit but a generic costs much less than an actual Compaq PSU. If you can find a vendor that will let you return the PSU that would be the ideal...

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Wont post.


Try a few things for me OK? From what you typed, turned on the psu "the toggle switch on the psu", pc seemed to be starting up. I need you to keep the toggle switch on the power supply in the on position. Press and hold the start button on the PC case to shut it down. Give it a few seconds & power up by pressing the power switch on the case. Notice a differance? Next, unplug everything connected to the pc expect the monitor, mouse & keyboard. Try to boot. Still no? Remove the side of the case exposing the board. Turn the psu off by flipping the toggle switch on the psu, wait till the green light on the board goes out. Grab the Mb ( I know it's tight in there) and see if you can move the board in any direction. Not loose? Re-check all data & power connections for a solid connect. Re-check your case to Mb connections. Also check the PSU, there is a red slide switch it should be set to 115v. Post your findings..
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