Question about Dell OptiPlex GX260 PC Desktop

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Exchanged case from Optiplex GX270, no boot

Hello, I have just exchanged case, since i wanted to go water cooling. I have preparated out those two miniboards, that start the computer and plugged everything in. Now when i press the start button, everything starts to spin, but i get no visual. Can't get even to BIOS. The computer worked before and I am certain i did not damage any components. What might i have missed?

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  • jurnecka Jan 25, 2009

    Thanks, but i already tried that like ten times. However its strange, that i dont get any self test sounds from the speaker.

  • jurnecka Jan 25, 2009

    I really appreciate it. As I have already mentioned, i switched to water cooling, therefore the fan is not connected (i also tried to connect it together with water). So I have reseated the processor, but I still get no POST. I am really running out of ideas.

  • jurnecka Jan 25, 2009

    Could I have screwed the cooler too much, so the processor got sqeezed? Is something like that possible?


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Try the old power supply. Dells are legendary for screwing with the wiring. I have heard they did this for pre P4, but who knows they could've done this with a few P4's as well.

If that's the case and I'm sure you're gonna need the power check out: They have one made to solve this problem.

Posted on Feb 11, 2009

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Check to make sure all of your cards and memory are seated properly.  Remove all of the cards and reseat them.  Best way to do it is remove everything, then put your RAM back in.  See if it will POST (Power On Self Test, e.g. the single beep).  If so, start putting each expansion card (e.g. video, audio, raid, etc) in one at a time and see if it will POST.  Also, make sure your CPU and heatsink are seated properly.  While changing cases shouldn't change anything, a stray bump in the process could have dislodged things.

Posted on Jan 25, 2009

  • Nick DelRegno Jan 25, 2009

    Usually the only thing that would keep it from passing POST is the processor or memory issues.  Also, make sure the ATX power connector is connected.  I'd reseat the processor, being careful not to mess up the thermal paste.  Lastly, make sure the CPU fan is A) connected and B) to the right fan pins.


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